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v o l u m e 12 n u m b e r 4
FALL 2013
Practical
Information
for Primary
Care
Status of Painful Diabetic Peripheral Neuropathy
in the Arab World :A Call to Action
Monira Al-Arouj, MD; Samir H. Assaad-Khalil, MD, PhD; Ebtesam
M Ba-Essa, FRCP; Megahed Abu El-Magd, MD; Mohamed Fahmy,
MD, PhD., Martha Funnell, PhD; Sherif Hafez, MD, FACP; Mahmoud
Ibrahim, MD; Abdulrazzaq Al-Madani, MD; Abdullah Ben Nakhi, MD;
Gamela Nasr, MD ; Abraham Thomas , MD, FACP
[Middle East Edition]
177 Volume 12, Number 4, 2013 • CLINICAL DIABETES (MIDDLE EAST EDITION)
L O C A L A R T I C L E S
Status of Painful Diabetic Peripheral Neuropathy
in the Arab World :A Call to Action
Monira Al-Arouj, MD1
; Samir H. Assaad-Khalil, MD, PhD2
; Ebtesam M Ba-Essa, FRCP3
; Megahed Abu El-Magd,
MD4
; Mohamed Fahmy, MD, PhD5
., Martha Funnell, PhD6
; Sherif Hafez, MD, FACP7
; Mahmoud Ibrahim, MD8
;
Abdulrazzaq Al-Madani, MD9
; Abdullah Ben Nakhi, MD1
; Gamela Nasr, MD10
; Abraham Thomas , MD, FACP11
1
Dasman Diabetes Institute, Kuwait; 2
Department of Internal Medicine, Unit of Diabetes & Metabolism, Faculty of
Medicine, Alexandria University, Egypt; 3
Dammam Medical Complex, Dammam, Saudi Arabia; 4
Department of Internal
Medicine & Endocrinology, Faculty of Medicine, Mansura University, Mansura, Egypt; 5
Department of Internal Medicine
& Endocrinology, Faculty of Medicine, Ain Shams University, Cairo, Egypt; 6
Department of Medical Education, University
of Michigan Medical School, Michigan, USA; 7
Department of Internal Medicine & Diabetes, Faculty of Medicine, Cairo
University, Cairo, Egypt; 8
EDC Center for Diabetes Education, McDonough, GA , USA; 9
Dubai Hospital, Dubai, United
Arab Emirates; 10
Department of Cardiology, Suez Canal University, Egypt; 11
Division Head Endocrinology, Diabetes, Bone &
Mineral Disorders, Whitehouse Chair in Endocrinology, Henry Ford Hospital, Detroit MI, USA.
Abstract
Diabetes is one of the most challeng-
ing health problems with its incidence
and prevalence rising in almost every
country in the world. However, the
prevalence in the Arab region has
been the highest. The prevalence of
painful diabetic peripheral neuropa-
thy (DPN) among type 1 or type 2
diabetic adults in the Arab countries
is very high.
Because of the high prevalence and
associated impact on the quality of
life, disability, and economic impact
of painful DPN, it was recommended
that diabetic patients should be
periodically screened, using a simple
instrument such as the DN4, and
receive appropriate treatment as
soon as symptoms and signs appear.
Educational programs concerning
painful DPN should target key phy-
sician leaders and educators so they
can be trained to train the others.
These programs should be designed
to enables these key doctors to
deliver the same educational content
to the primary health care providers
including, but not limited to fam-
ily physicians, nurses and diabetes
educators.
Also campaigns to target lay people
should be developed, using the
suitable tools adapted for each com-
munity, to increase public awareness
of the diabetic neuropathic pain
problem and possible ways of pre-
vention with a special focus on the
need for glycemic control
Keywords: Painful Neuropathy, Arab
World.
Corresponding Author Details:
Mahmoud Ibrahim, MD Director
EDC, Center for Diabetes
Education, McDonough, GA, USA.
mahmoud@arab-diabetes.com
Diabetes in the Arab countries
Diabetes is undoubtedly one of the
most challenging health problems,
where its incidence and prevalence
are rising approximately in every
country of the world. However, the
prevalence seen in the Arab region
has been the highest 1. Current
data shows that almost 20.5 mil-
lion people from 20 Arab countries
are diabetics, and 13.7 million are
in the pre-diabetes stage. This high
prevalence of diabetes is reflected
by the finding that five of the top 10
countries with the greatest diabetes
prevalence in subjects 20-79 years
old were actually from the Arab
region1. Population-based diabetes
studies have shown that the preva-
lence of diabetes in these countries
was 23.9% in Kuwait, 23.4% in
Saudi Arabia, 23.3% in Qatar and
22.4% in Bahrain1. The age-specific
prevalence of diabetes shows that
in developed countries, most people
with diabetes are above the age of
retirement, while in Arab countries;
approximately 73% of people with
diabetics are younger than sixty.
This younger age could significantly
increase disability due to diabetes
in a younger and more likely to be
working population, making the
impact even greater1.
Despite the emphasis on glycemic
control, evidence of improvement in
A1C control over time remains scant.
in Egypt Only 16.5% of patients
had A1C < 7% and 28.5% of them
had very poor glycemic control as
represented by an A1C > 9%.2
A screening campaign of 197,681
participants in an eastern province
of Saudi Arabia, demonstrated an
estimated prevalence of diabetes
of 15.7%. However, only 33.8% of
patients with diabetes achieved their
glycemic control targets (fasting
blood glucose less than 130 mg/dl or
178Volume 12, Number 4, 2013 • CLINICAL DIABETES (MIDDLE EAST EDITION)
L O C A L A R T I C L E S
random capillary blood glucose less
than 180 mg/dl). Multiple logistic
regression analysis showed that
higher age, current smoking and
lower level of physical activity were
significantly associated with uncon-
trolled diabetes.3 Another study
in Saudi Arabia revealed that only
27% of people with type 2 Diabetes
reached their glycemic target (A1C <
7%).4
Painful Diabetic Peripheral
Neuropathy
The neuropathies developing in
patients with diabetes are known to
be heterogeneous by their symptoms,
pattern of neurologic involvement,
and course. An internationally
agreed definition of Diabetic Painful
Neuropathy DPN for clinical prac-
tice is: the presence of symptoms and/
or signs of peripheral nerve dysfunc-
tion in patients with diabetes after
a careful clinical examination of the
lower extremities and the exclusion
of other causes. However, not all
patients with peripheral nerve dys-
function have a neuropathy caused
by diabetes. Confirmation can be
established with quantitative electro-
physiology, sensory, and autonomic
function testing 5-6-7.
How should the severity of a patient's
polyneuropathy be assessed? The
severity of a patient's polyneuropathy
is obviously the sum of the patient's
symptoms, neurological signs, test
abnormalities, dysfunctions and
other adverse outcomes. Numerous
classifications have been proposed
in the recent years, which have been
based mainly on one originally
proposed by Thomas.8
Separate definitions for typical
Diabetic sensorimotor polyneu-
ropathy DPN (DSPN) and atypical
DPNs were proposed by Tesfaye and
Boulton, et al. DSPN is a symmetri-
cal, length-dependent sensorimotor
polyneuropathy attributable to meta-
bolic and microvascular alterations
as a result of chronic hyperglycemia
exposure (diabetes) and cardiovas-
cular risk covariates accompanied by
an abnormality of nerve conduction
tests, which is frequently subclinical.
Coexisting retinopathy and nephrop-
athy strengthen the diagnosis after
exclusion of other causes of senso-
rimotor polyneuropathy. 5
For epidemiologic surveys or con-
trolled clinical trials of DSPN, it is
advocated to use appropriate nerve
conduction (NC) testing as an early
and confirmed diagnosis of the occur-
rence of DSPN. On the other hand,
atypical DPNs have been less well
characterized and studied. Composite
scores of neuropathy symptoms,
signs, neurophysiologic test abnor-
malities, and other dysfunctions and
impairments may provide an indica-
tion of its severity 9-10
An alternative approach for esti-
mating the severity is to define this
severity by grades. Dyck described
the stages of severity ranging from
Grade 0 where there is no abnormal-
ity in the NC up to Grade 2b where
the NC abnormality is accompanied
by a moderate degree of weakness
(i.e. 50%) of ankle dorsiflexion with
or without neuropathy symptoms. 11
However, definitions of typical DPN
are: 1- Possible DSPN where you
can find the presence of symptoms or
signs of DSPN including decreased
sensation, positive neuropathic
sensory symptoms predominantly
in the toes, feet, and/or legs; or signs
such as a symmetric decrease in distal
sensation or unequivocally decreased
or absent ankle reflexes. 2-Probable
DSPN which is a combination of
symptoms and signs of neuropathy,
including any two or more neu-
ropathic symptoms, decreased
distal sensation, or unequivocally
decreased or absent ankle reflexes.
3-Confirmed DSPN is the pres-
ence of an abnormality of NC and
symptom(s) and/or sign(s) of neu-
ropathy. If NC is normal, a validated
measure of small fiber neuropathy
(SFN) may be used. To assess for
the severity of DSPN, you need to
sum the scores of neurologic signs,
symptoms or nerve test scores, scores
of function of acts of daily living or
of predetermined tasks or of disabil-
ity. 4- Subclinical DSPN it is the lack
of signs or symptoms of neuropathy
with abnormal NC(s) or a validated
measure of SFN. It is recommended
that definitions 1, 2, or 3 be used for
clinical practice and definitions 3 or 4
be used for research studies. 12-13-14
Atypical DPNs
Before further classification of these
polyneuropathies, setting the mini-
mal criteria for diagnosis, estimating
the severity of neuropathy, and
further studies characterizing the
epidemiology and mechanisms are
needed. 14
PAINFUL DPN
is pain arising as a direct consequence
of abnormalities in the peripheral
somatosensory system in people with
diabetes, which was adapted from a
definition recently proposed by the
International Association for the
Study of Pain. 12 Its prevalence in
the diabetic population is difficult to
estimate as definitions have varied
enormously among studies; however,
it is roughly estimated that between
3 and 25% of patients might experi-
ence neuropathic pain (NP) with
limited data on the natural history.
13 In practice, the diagnosis of
painful DPN is a clinical one, which
relies on the patient’s description
of pain. The symptoms are distal,
symmetrical, often associated with
nocturnal exacerbations, and com-
monly described as prickling, deep
aching, sharp, like an electric shock,
and burning with hyperalgesia and
frequently allodynia upon examina-
tion. 13 The symptoms are usually
associated with the clinical signs of
peripheral neuropathy, although
occasionally in acute painful DPN,
the symptoms may occur in the
absence of the typical signs. A num-
ber of simple numeric rating scales
can be used to assess the frequency
and severity of painful symptoms.
14 After exclusion of other causes of
neuropathic pain NP. The severity
of pain can be reliably assessed by
the old and validated visual analog
179 Volume 12, Number 4, 2013 • CLINICAL DIABETES (MIDDLE EAST EDITION)
L O C A L A R T I C L E S
scale, or the widely used numerical
rating scale, e.g. the 11-point Likert
scale ranging from (0 _ no pain, 10 _
worst possible pain). Quality of life
(QoL) improvement should also be
assessed, preferably using a validated
neuropathy-specific scale such as
Neuro-QOL or the Norfolk Quality
of Life Scale. 15 Outcomes must be
measured using patient-reported
improvement in scales for pain
and QoL as measured on validated
instruments. External observers can
play no part in the assessment of the
subject’s responses to the new thera-
pies for NP; thus, measures such as
the “physician’s global impression of
response” are not valid.
Painful neuropathy in the Arab
countries
In a step to determine the preva-
lence of painful DPN in the Arab
countries, the main objective of a
recent study done by Jambart and his
colleagues was to determine the prev-
alence of painful DPN among type
1 or type 2 diabetic adults attend-
ing outpatient clinics in the Middle
East Region, specifically Egypt,
Lebanon, Jordan and the Gulf
States of Kuwait and the United
Arab Emirates (n = 4097.) Overall,
53.7% of 3989 patients with DN4
data met the criteria for painful DPN
(Douleur Neuropathique-4 [DN4]
scores ≥4). The symptom ranged
from itching (23.1%) to burning sen-
sation (59.3%) including hypothesia,
painful cold, electric shock, tingling
and numbness (Figure 1). Significant
predictors of painful DPN included
longer duration (≥10 years) of dia-
betes (odds ratio [OR] 2.43), age ≥65
years (OR 2.13), age 50 – 64 years
(OR 1.75), presence of type 1 versus
type 2 diabetes (OR 1.59), body
mass index ≥30 kg/m2 (OR 1.35) and
female gender (OR 1.27). Living in
one of the Gulf States was associ-
ated with the lowest odds of having
painful DPN (OR 0.44). The odds
of painful DPN were highest among
patients with peripheral vascular dis-
ease (OR 4.98), diabetic retinopathy
(OR 3.90) and diabetic nephropathy
(OR 3.23) (Figure 2.) Because of the
high prevalence, associated suffering,
disability and economic burden of
painful DPN, it was recommended
that diabetic patients should be
periodically screened, using a simple
instrument such as the DN4, and
receive appropriate treatment as
early as the symptoms and signs start
to appear. 16
Treatment of Painful Diabetic
Neuropathic Pain
There are many available treat-
ment options; however, a rational
approach to treating the patient
with painful DPN requires an
understanding of the evidence for
each intervention. Pharmacological
management of painful DPN almost
exclusively consists of symptomatic
therapies improving symptoms
without an effect on underlying
causes or natural history 17. The
antioxidant lipoic acid administered
intravenously is the only pathogenic
treatment that has efficacy confirmed
from several randomized controlled
trials and in a meta-analysis18.
Again Level A evidence supports
the use of tricyclic antidepres-
sants (e.g., amitriptyline) 21, the
anticonvulsants gabapentin and
pregabalin, and the serotonin and
norepinephrine reuptake inhibitor
duloxetine 17-20-22-23. On the other
hand there are also randomized
controlled trials (RCT) supporting
the use of opiates, such as oxycodone
and tramadol in painful DPN 17-20.
However in another study, there
was no evidence to support the use
of the cannabinoids 24. Thus, it is
recommended that first line therapy
180Volume 12, Number 4, 2013 • CLINICAL DIABETES (MIDDLE EAST EDITION)
L O C A L A R T I C L E S
for painful DPN could be a tricyclic
antidepressant, duloxetine, prega-
balin, or gabapentin, after careful
consideration of individual patient
comorbidities and the cost of the
drug 17-20-22. Combinations of the
first-line therapies could be an option,
if significant pain persists , after
initiation of first-line monotherapy
17-20. If these changes and combined
therapy do not control the pain, , opi-
oids, like tramadol and oxycodone,
may be considered in combination
with first-line therapies as part of the
treatment plan 17-20. Preliminary
evidence shows promise for topical
treatment, using a 5% lignocaine
plaster applied to the most painful
area 25, although larger RCTs are
required. Non-pharmacological
treatments, such as spinal cord stimu-
lation, might be useful in refractory
painful DPN, 19 however, insufficient
evidence exists for any other non-
pharmacological therapies.
Old and New drugs
Although several novel analgesic
drugs have recently been introduced
into clinical practice, the pharma-
cologic treatment of chronic DPN
remains a challenge for the physi-
cian. Individual tolerability remains
a major aspect in any treatment
decision. Advanced knowledge in the
neurobiology of neuropathic pain
and an increasing perception of the
commercial value of analgesic agents
have led to a real need for research
develops to novel pharmaceutical
approaches. According to a recent
review 26, at least 50 new molecular
entities have reached the clinical stage
of development, including glutamate
antagonists, cytokine inhibitors,
vanilloid-receptor agonists, cat-
echolamine modulators, ion-channel
blockers, anticonvulsants, opioids,
cannabinoids, COX inhibitors,
acetylcholine modulators, adenos-
ine receptor agonists, and several
miscellaneous drugs. Eight drugs are
presently in phase III trials. Strategies
that may show promise over existing
treatments include topical therapies,
analgesic combinations, and, in the
future, gene- related therapies 26.
Whether the efficacy and safety
differ between the newer and older
compounds has not been systemati-
cally addressed in comparative trials,
although clinical experience indi-
cates that the rates of adverse events
(AEs) of the newer compounds may
be lower than those of the older ones,
such as tricyclic antidepressants.
Almost no information is available
from controlled trials on long-term
analgesic efficacy. Only few stud-
ies have used drug combinations,
indicating that the latter may result
in enhanced efficacy. 26
There are many unanswered ques-
tions and areas relating to painful
DPN that warrant further investiga-
tion, including population-based
prevalence and natural history stud-
ies, trials using active comparators
rather than placebo, assessment of
combination therapies in addition to
placebo, and longer-term studies of
the efficacy and durability of treat-
ments of painful DPN 26
Recently a multidisciplinary panel
, including key physicians and
researchers concerned with neu-
ropathic pain in the Middle East
area along with an international
Figure 1 & 2 reproduced with permission of the JIMR
181 Volume 12, Number 4, 2013 • CLINICAL DIABETES (MIDDLE EAST EDITION)
L O C A L A R T I C L E S
panel, met together to review the
most recent data in an attempt
to form a consensus for evidence
based guidelines to treat DPN
(mainly peripheral painful DPN)
in patients from the Middle East.
This expert panel recommended
pregabalin, gabapentin and second-
ary amine tricyclic antidepressants
(nortriptyline and desipramine) as
first-line treatments for peripheral
DPN. Serotonin–norepinephrine
reuptake inhibitor antidepressants,
tramadol and controlled-release
opioid analgesics were preferred by
the same panel to serve as second line
treatments. They also addressed the
need to increase diagnostic awareness
of DPN , use validated screening
questionnaires, and undertakes more
research on treatment in the Middle
East region27
The Role of Diabetes Education and
the Diabetes Educator
The provision of comprehensive
diabetes self-management educa-
tion as well as specific information
about neuropathy and foot-care is
recommended as part of the on-going
clinical care of diabetes.28,29 All
patients with diabetes need general
education about long-term complica-
tions and foot care. Patients who
have high risk foot conditions, such
as neuropathy, need to understand
their personal risk factors and
specific strategies to prevent further
damage.28,30,31
Education about appropriate foot
care is particularly important for
patients who are at high risk. 30
and has been shown to positively
influence foot care behavior in the
short-term. 31 Patients with neu-
ropathy and other high-risk foot
conditions need to understand the
implications of decreased sensa-
tion, the importance of appropriate
footwear and daily foot inspection,
how to effectively care for their feet
and when to seek care.28
Foot care education has the poten-
tial to prevent further damage and
the ulcerations that can lead to
amputations, other morbidities and
mortality. While all health care pro-
fessionals who provide diabetes care
need to provide this information, the
diabetes educator can play a key role
in providing effective education. The
role of the educator is particularly
important in busy practices where
foot care education can become
secondary to medical management.
As part of initial education,
the diabetes educator can:
•	 Provide information about
potential complications, includ-
ing neuropathy and prevention
strategies, such as blood glucose
management.
•	 Teach patients to identify symp-
toms that could be linked to
neuropathy and when to report
them to the provider, stressing the
importance of early detection to
prevent further damage. Because
many symptoms are vague and
may not be recognized by patients
as linked to diabetes or nerve
damage, this is a particularly
important role for the educator.
•	 Teach patients initial foot
care strategies, such as remov-
ing shoes and socks at all
diabetes-related visits to facilitate
examination and reminding
providers of the need for an
annual comprehensive exam.
In addition, home care, such as
appropriate daily care and foot-
wear are initial education topics
the educator can address.
As part of continuing education,
the diabetes educator can:
•	 Review prevention strategies for
complications and symptoms to
report to physicians.
•	 Conduct foot inspections and to
screen for neuropathy (checking
pulses, reflexes and sensation
with a monofilament) using
standard screening instruments
. http://www.med.umich.edu/
mdrtc/profs/survey.html#mnsi
After the diagnosis of neuropathy,
the diabetes educator can:
•	 Assist patient to cope with the
bad news of a complication.
Offer reassurance that amputa-
tions are not an inevitable result.
32
•	 Provide information about medi-
cations available for pain relief
and other strategies to ease pain
(e.g. keeping bed covers away
from painful feet).
•	 Emphasize the critical impor-
tance of foot care and provide
personalized strategies to prevent
trauma. Stress the importance
of protecting the feet, inspecting
for injury and seeking prompt
treatment for any issues.
•	 Work with the patient to create
a daily plan for foot care that
accommodates the patient’s
physical findings, schedule,
lifestyle and culture.
Recommendations
In the Arab countries, the high
prevalence of the Diabetic Painful
Neuropathy is actually leading to
significant morbidity and disability,
which could also create an economic
burden. Accordingly, there is a great
need to tackle this problem , even
though DPN may not be life threaten-
ing issue, such as the macrovascular
complications of diabetes. Yet DPN
negatively impacts the quality of life.
The recommendations included
hereunder provide guidance on
appropriate care and measures that
can be modified according to suit the
needs of each country.
A) The Establishment of Painful 		
Neuropathy Leaders:
Programs should be targeting key
doctors concerned with painful
neuropathy in a way to train the
trainers. These programs should
be designed in a way to enables
these key doctors to deliver the
same materials and messages to
the primary health care provid-
ers in their area, including, but
not limited to family physicians ,
nurses, and diabetes educators.
B) Lay people
targeted campaigns should be
designed using the suitable tools
182Volume 12, Number 4, 2013 • CLINICAL DIABETES (MIDDLE EAST EDITION)
L O C A L A R T I C L E S
for each community aiming to
increase public awareness of the
neuropathic pain problem and the
possible ways of prevention with
a special focus on the glycemic
control.
For a more in depth and recent
review of diabetic neuropathy33
Disclosure:
Authors of this article have no
relevant financial relationships to
disclose.
This article is a part of an edu-
cational activity supported &
sponsored without restriction by
Pfizer.
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19. 	Tesfaye S, Watt J, Benbow SJ,
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IA. Electrical spinal cord
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20. Jensen TS, Backonja MM,
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Hernández Jiménez S, Tesfaye
S, Valensi P, Ziegler D. New
perspectives on the manage-
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21. 	McQuay HJ, Tramèr M,
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in neuropathic pain. Pain
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22. Freeman R, Durso-Decruz
E, Emir B. Efficacy, safety,
and tolerability of pregabalin
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from seven randomized, con-
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doses. Diabetes Care 2008;31:
1448–1454
23. Lunn MP, Hughes RA, Wiffen
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24. Selvarajah D, Gandhi R, Emery
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25. Baron R, Mayoral V, Leijon G,
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M. 5% lidocaine medicated
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26.	 Dan Ziegler , Painful Diabetic
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27. 	S Bohlega, T Alsaadi, A Amir,
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28. American Diabetes Association.
Standards of medical care in
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29. 	Haas L, Maryniuk M, Beck J,
Cox CE, Duker P, Edwards
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30. Boulton AJ, Armstrong
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Wukich DK, American
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Comprehensive foot exami-
nation and risk assessment.
Diabetes Care 2008;31:1679-85.
31. 	Apelqvist J, Bakker K, van
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Franssen MH, Schaper NC.
International consensus and
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Diabetes Metab. Res. Rev.
2000;16:S84–S92.
32. 	Dorresteijn JAN, Kriegsman
DMW, Assendelft WJJ, Valk
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33. 	Solomon Tesfaye, Andrew
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Polyneuropathy. Diabetes Care
2013;36:2456–2465
CLINICALDIABETESME.ONLINEDIABETES.NET
12 4 2013
2013
Contact Information :
Mailing Address: 3119 Trees of Avalon Parkway,
McDonough , GA 30253
Telephone: 678 759 1561
E-Mail:	 mahmoud@arab-diabetes.com

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Call to Action on Painful Diabetic Neuropathy in Arab World

  • 1. v o l u m e 12 n u m b e r 4 FALL 2013 Practical Information for Primary Care Status of Painful Diabetic Peripheral Neuropathy in the Arab World :A Call to Action Monira Al-Arouj, MD; Samir H. Assaad-Khalil, MD, PhD; Ebtesam M Ba-Essa, FRCP; Megahed Abu El-Magd, MD; Mohamed Fahmy, MD, PhD., Martha Funnell, PhD; Sherif Hafez, MD, FACP; Mahmoud Ibrahim, MD; Abdulrazzaq Al-Madani, MD; Abdullah Ben Nakhi, MD; Gamela Nasr, MD ; Abraham Thomas , MD, FACP [Middle East Edition]
  • 2. 177 Volume 12, Number 4, 2013 • CLINICAL DIABETES (MIDDLE EAST EDITION) L O C A L A R T I C L E S Status of Painful Diabetic Peripheral Neuropathy in the Arab World :A Call to Action Monira Al-Arouj, MD1 ; Samir H. Assaad-Khalil, MD, PhD2 ; Ebtesam M Ba-Essa, FRCP3 ; Megahed Abu El-Magd, MD4 ; Mohamed Fahmy, MD, PhD5 ., Martha Funnell, PhD6 ; Sherif Hafez, MD, FACP7 ; Mahmoud Ibrahim, MD8 ; Abdulrazzaq Al-Madani, MD9 ; Abdullah Ben Nakhi, MD1 ; Gamela Nasr, MD10 ; Abraham Thomas , MD, FACP11 1 Dasman Diabetes Institute, Kuwait; 2 Department of Internal Medicine, Unit of Diabetes & Metabolism, Faculty of Medicine, Alexandria University, Egypt; 3 Dammam Medical Complex, Dammam, Saudi Arabia; 4 Department of Internal Medicine & Endocrinology, Faculty of Medicine, Mansura University, Mansura, Egypt; 5 Department of Internal Medicine & Endocrinology, Faculty of Medicine, Ain Shams University, Cairo, Egypt; 6 Department of Medical Education, University of Michigan Medical School, Michigan, USA; 7 Department of Internal Medicine & Diabetes, Faculty of Medicine, Cairo University, Cairo, Egypt; 8 EDC Center for Diabetes Education, McDonough, GA , USA; 9 Dubai Hospital, Dubai, United Arab Emirates; 10 Department of Cardiology, Suez Canal University, Egypt; 11 Division Head Endocrinology, Diabetes, Bone & Mineral Disorders, Whitehouse Chair in Endocrinology, Henry Ford Hospital, Detroit MI, USA. Abstract Diabetes is one of the most challeng- ing health problems with its incidence and prevalence rising in almost every country in the world. However, the prevalence in the Arab region has been the highest. The prevalence of painful diabetic peripheral neuropa- thy (DPN) among type 1 or type 2 diabetic adults in the Arab countries is very high. Because of the high prevalence and associated impact on the quality of life, disability, and economic impact of painful DPN, it was recommended that diabetic patients should be periodically screened, using a simple instrument such as the DN4, and receive appropriate treatment as soon as symptoms and signs appear. Educational programs concerning painful DPN should target key phy- sician leaders and educators so they can be trained to train the others. These programs should be designed to enables these key doctors to deliver the same educational content to the primary health care providers including, but not limited to fam- ily physicians, nurses and diabetes educators. Also campaigns to target lay people should be developed, using the suitable tools adapted for each com- munity, to increase public awareness of the diabetic neuropathic pain problem and possible ways of pre- vention with a special focus on the need for glycemic control Keywords: Painful Neuropathy, Arab World. Corresponding Author Details: Mahmoud Ibrahim, MD Director EDC, Center for Diabetes Education, McDonough, GA, USA. mahmoud@arab-diabetes.com Diabetes in the Arab countries Diabetes is undoubtedly one of the most challenging health problems, where its incidence and prevalence are rising approximately in every country of the world. However, the prevalence seen in the Arab region has been the highest 1. Current data shows that almost 20.5 mil- lion people from 20 Arab countries are diabetics, and 13.7 million are in the pre-diabetes stage. This high prevalence of diabetes is reflected by the finding that five of the top 10 countries with the greatest diabetes prevalence in subjects 20-79 years old were actually from the Arab region1. Population-based diabetes studies have shown that the preva- lence of diabetes in these countries was 23.9% in Kuwait, 23.4% in Saudi Arabia, 23.3% in Qatar and 22.4% in Bahrain1. The age-specific prevalence of diabetes shows that in developed countries, most people with diabetes are above the age of retirement, while in Arab countries; approximately 73% of people with diabetics are younger than sixty. This younger age could significantly increase disability due to diabetes in a younger and more likely to be working population, making the impact even greater1. Despite the emphasis on glycemic control, evidence of improvement in A1C control over time remains scant. in Egypt Only 16.5% of patients had A1C < 7% and 28.5% of them had very poor glycemic control as represented by an A1C > 9%.2 A screening campaign of 197,681 participants in an eastern province of Saudi Arabia, demonstrated an estimated prevalence of diabetes of 15.7%. However, only 33.8% of patients with diabetes achieved their glycemic control targets (fasting blood glucose less than 130 mg/dl or
  • 3. 178Volume 12, Number 4, 2013 • CLINICAL DIABETES (MIDDLE EAST EDITION) L O C A L A R T I C L E S random capillary blood glucose less than 180 mg/dl). Multiple logistic regression analysis showed that higher age, current smoking and lower level of physical activity were significantly associated with uncon- trolled diabetes.3 Another study in Saudi Arabia revealed that only 27% of people with type 2 Diabetes reached their glycemic target (A1C < 7%).4 Painful Diabetic Peripheral Neuropathy The neuropathies developing in patients with diabetes are known to be heterogeneous by their symptoms, pattern of neurologic involvement, and course. An internationally agreed definition of Diabetic Painful Neuropathy DPN for clinical prac- tice is: the presence of symptoms and/ or signs of peripheral nerve dysfunc- tion in patients with diabetes after a careful clinical examination of the lower extremities and the exclusion of other causes. However, not all patients with peripheral nerve dys- function have a neuropathy caused by diabetes. Confirmation can be established with quantitative electro- physiology, sensory, and autonomic function testing 5-6-7. How should the severity of a patient's polyneuropathy be assessed? The severity of a patient's polyneuropathy is obviously the sum of the patient's symptoms, neurological signs, test abnormalities, dysfunctions and other adverse outcomes. Numerous classifications have been proposed in the recent years, which have been based mainly on one originally proposed by Thomas.8 Separate definitions for typical Diabetic sensorimotor polyneu- ropathy DPN (DSPN) and atypical DPNs were proposed by Tesfaye and Boulton, et al. DSPN is a symmetri- cal, length-dependent sensorimotor polyneuropathy attributable to meta- bolic and microvascular alterations as a result of chronic hyperglycemia exposure (diabetes) and cardiovas- cular risk covariates accompanied by an abnormality of nerve conduction tests, which is frequently subclinical. Coexisting retinopathy and nephrop- athy strengthen the diagnosis after exclusion of other causes of senso- rimotor polyneuropathy. 5 For epidemiologic surveys or con- trolled clinical trials of DSPN, it is advocated to use appropriate nerve conduction (NC) testing as an early and confirmed diagnosis of the occur- rence of DSPN. On the other hand, atypical DPNs have been less well characterized and studied. Composite scores of neuropathy symptoms, signs, neurophysiologic test abnor- malities, and other dysfunctions and impairments may provide an indica- tion of its severity 9-10 An alternative approach for esti- mating the severity is to define this severity by grades. Dyck described the stages of severity ranging from Grade 0 where there is no abnormal- ity in the NC up to Grade 2b where the NC abnormality is accompanied by a moderate degree of weakness (i.e. 50%) of ankle dorsiflexion with or without neuropathy symptoms. 11 However, definitions of typical DPN are: 1- Possible DSPN where you can find the presence of symptoms or signs of DSPN including decreased sensation, positive neuropathic sensory symptoms predominantly in the toes, feet, and/or legs; or signs such as a symmetric decrease in distal sensation or unequivocally decreased or absent ankle reflexes. 2-Probable DSPN which is a combination of symptoms and signs of neuropathy, including any two or more neu- ropathic symptoms, decreased distal sensation, or unequivocally decreased or absent ankle reflexes. 3-Confirmed DSPN is the pres- ence of an abnormality of NC and symptom(s) and/or sign(s) of neu- ropathy. If NC is normal, a validated measure of small fiber neuropathy (SFN) may be used. To assess for the severity of DSPN, you need to sum the scores of neurologic signs, symptoms or nerve test scores, scores of function of acts of daily living or of predetermined tasks or of disabil- ity. 4- Subclinical DSPN it is the lack of signs or symptoms of neuropathy with abnormal NC(s) or a validated measure of SFN. It is recommended that definitions 1, 2, or 3 be used for clinical practice and definitions 3 or 4 be used for research studies. 12-13-14 Atypical DPNs Before further classification of these polyneuropathies, setting the mini- mal criteria for diagnosis, estimating the severity of neuropathy, and further studies characterizing the epidemiology and mechanisms are needed. 14 PAINFUL DPN is pain arising as a direct consequence of abnormalities in the peripheral somatosensory system in people with diabetes, which was adapted from a definition recently proposed by the International Association for the Study of Pain. 12 Its prevalence in the diabetic population is difficult to estimate as definitions have varied enormously among studies; however, it is roughly estimated that between 3 and 25% of patients might experi- ence neuropathic pain (NP) with limited data on the natural history. 13 In practice, the diagnosis of painful DPN is a clinical one, which relies on the patient’s description of pain. The symptoms are distal, symmetrical, often associated with nocturnal exacerbations, and com- monly described as prickling, deep aching, sharp, like an electric shock, and burning with hyperalgesia and frequently allodynia upon examina- tion. 13 The symptoms are usually associated with the clinical signs of peripheral neuropathy, although occasionally in acute painful DPN, the symptoms may occur in the absence of the typical signs. A num- ber of simple numeric rating scales can be used to assess the frequency and severity of painful symptoms. 14 After exclusion of other causes of neuropathic pain NP. The severity of pain can be reliably assessed by the old and validated visual analog
  • 4. 179 Volume 12, Number 4, 2013 • CLINICAL DIABETES (MIDDLE EAST EDITION) L O C A L A R T I C L E S scale, or the widely used numerical rating scale, e.g. the 11-point Likert scale ranging from (0 _ no pain, 10 _ worst possible pain). Quality of life (QoL) improvement should also be assessed, preferably using a validated neuropathy-specific scale such as Neuro-QOL or the Norfolk Quality of Life Scale. 15 Outcomes must be measured using patient-reported improvement in scales for pain and QoL as measured on validated instruments. External observers can play no part in the assessment of the subject’s responses to the new thera- pies for NP; thus, measures such as the “physician’s global impression of response” are not valid. Painful neuropathy in the Arab countries In a step to determine the preva- lence of painful DPN in the Arab countries, the main objective of a recent study done by Jambart and his colleagues was to determine the prev- alence of painful DPN among type 1 or type 2 diabetic adults attend- ing outpatient clinics in the Middle East Region, specifically Egypt, Lebanon, Jordan and the Gulf States of Kuwait and the United Arab Emirates (n = 4097.) Overall, 53.7% of 3989 patients with DN4 data met the criteria for painful DPN (Douleur Neuropathique-4 [DN4] scores ≥4). The symptom ranged from itching (23.1%) to burning sen- sation (59.3%) including hypothesia, painful cold, electric shock, tingling and numbness (Figure 1). Significant predictors of painful DPN included longer duration (≥10 years) of dia- betes (odds ratio [OR] 2.43), age ≥65 years (OR 2.13), age 50 – 64 years (OR 1.75), presence of type 1 versus type 2 diabetes (OR 1.59), body mass index ≥30 kg/m2 (OR 1.35) and female gender (OR 1.27). Living in one of the Gulf States was associ- ated with the lowest odds of having painful DPN (OR 0.44). The odds of painful DPN were highest among patients with peripheral vascular dis- ease (OR 4.98), diabetic retinopathy (OR 3.90) and diabetic nephropathy (OR 3.23) (Figure 2.) Because of the high prevalence, associated suffering, disability and economic burden of painful DPN, it was recommended that diabetic patients should be periodically screened, using a simple instrument such as the DN4, and receive appropriate treatment as early as the symptoms and signs start to appear. 16 Treatment of Painful Diabetic Neuropathic Pain There are many available treat- ment options; however, a rational approach to treating the patient with painful DPN requires an understanding of the evidence for each intervention. Pharmacological management of painful DPN almost exclusively consists of symptomatic therapies improving symptoms without an effect on underlying causes or natural history 17. The antioxidant lipoic acid administered intravenously is the only pathogenic treatment that has efficacy confirmed from several randomized controlled trials and in a meta-analysis18. Again Level A evidence supports the use of tricyclic antidepres- sants (e.g., amitriptyline) 21, the anticonvulsants gabapentin and pregabalin, and the serotonin and norepinephrine reuptake inhibitor duloxetine 17-20-22-23. On the other hand there are also randomized controlled trials (RCT) supporting the use of opiates, such as oxycodone and tramadol in painful DPN 17-20. However in another study, there was no evidence to support the use of the cannabinoids 24. Thus, it is recommended that first line therapy
  • 5. 180Volume 12, Number 4, 2013 • CLINICAL DIABETES (MIDDLE EAST EDITION) L O C A L A R T I C L E S for painful DPN could be a tricyclic antidepressant, duloxetine, prega- balin, or gabapentin, after careful consideration of individual patient comorbidities and the cost of the drug 17-20-22. Combinations of the first-line therapies could be an option, if significant pain persists , after initiation of first-line monotherapy 17-20. If these changes and combined therapy do not control the pain, , opi- oids, like tramadol and oxycodone, may be considered in combination with first-line therapies as part of the treatment plan 17-20. Preliminary evidence shows promise for topical treatment, using a 5% lignocaine plaster applied to the most painful area 25, although larger RCTs are required. Non-pharmacological treatments, such as spinal cord stimu- lation, might be useful in refractory painful DPN, 19 however, insufficient evidence exists for any other non- pharmacological therapies. Old and New drugs Although several novel analgesic drugs have recently been introduced into clinical practice, the pharma- cologic treatment of chronic DPN remains a challenge for the physi- cian. Individual tolerability remains a major aspect in any treatment decision. Advanced knowledge in the neurobiology of neuropathic pain and an increasing perception of the commercial value of analgesic agents have led to a real need for research develops to novel pharmaceutical approaches. According to a recent review 26, at least 50 new molecular entities have reached the clinical stage of development, including glutamate antagonists, cytokine inhibitors, vanilloid-receptor agonists, cat- echolamine modulators, ion-channel blockers, anticonvulsants, opioids, cannabinoids, COX inhibitors, acetylcholine modulators, adenos- ine receptor agonists, and several miscellaneous drugs. Eight drugs are presently in phase III trials. Strategies that may show promise over existing treatments include topical therapies, analgesic combinations, and, in the future, gene- related therapies 26. Whether the efficacy and safety differ between the newer and older compounds has not been systemati- cally addressed in comparative trials, although clinical experience indi- cates that the rates of adverse events (AEs) of the newer compounds may be lower than those of the older ones, such as tricyclic antidepressants. Almost no information is available from controlled trials on long-term analgesic efficacy. Only few stud- ies have used drug combinations, indicating that the latter may result in enhanced efficacy. 26 There are many unanswered ques- tions and areas relating to painful DPN that warrant further investiga- tion, including population-based prevalence and natural history stud- ies, trials using active comparators rather than placebo, assessment of combination therapies in addition to placebo, and longer-term studies of the efficacy and durability of treat- ments of painful DPN 26 Recently a multidisciplinary panel , including key physicians and researchers concerned with neu- ropathic pain in the Middle East area along with an international Figure 1 & 2 reproduced with permission of the JIMR
  • 6. 181 Volume 12, Number 4, 2013 • CLINICAL DIABETES (MIDDLE EAST EDITION) L O C A L A R T I C L E S panel, met together to review the most recent data in an attempt to form a consensus for evidence based guidelines to treat DPN (mainly peripheral painful DPN) in patients from the Middle East. This expert panel recommended pregabalin, gabapentin and second- ary amine tricyclic antidepressants (nortriptyline and desipramine) as first-line treatments for peripheral DPN. Serotonin–norepinephrine reuptake inhibitor antidepressants, tramadol and controlled-release opioid analgesics were preferred by the same panel to serve as second line treatments. They also addressed the need to increase diagnostic awareness of DPN , use validated screening questionnaires, and undertakes more research on treatment in the Middle East region27 The Role of Diabetes Education and the Diabetes Educator The provision of comprehensive diabetes self-management educa- tion as well as specific information about neuropathy and foot-care is recommended as part of the on-going clinical care of diabetes.28,29 All patients with diabetes need general education about long-term complica- tions and foot care. Patients who have high risk foot conditions, such as neuropathy, need to understand their personal risk factors and specific strategies to prevent further damage.28,30,31 Education about appropriate foot care is particularly important for patients who are at high risk. 30 and has been shown to positively influence foot care behavior in the short-term. 31 Patients with neu- ropathy and other high-risk foot conditions need to understand the implications of decreased sensa- tion, the importance of appropriate footwear and daily foot inspection, how to effectively care for their feet and when to seek care.28 Foot care education has the poten- tial to prevent further damage and the ulcerations that can lead to amputations, other morbidities and mortality. While all health care pro- fessionals who provide diabetes care need to provide this information, the diabetes educator can play a key role in providing effective education. The role of the educator is particularly important in busy practices where foot care education can become secondary to medical management. As part of initial education, the diabetes educator can: • Provide information about potential complications, includ- ing neuropathy and prevention strategies, such as blood glucose management. • Teach patients to identify symp- toms that could be linked to neuropathy and when to report them to the provider, stressing the importance of early detection to prevent further damage. Because many symptoms are vague and may not be recognized by patients as linked to diabetes or nerve damage, this is a particularly important role for the educator. • Teach patients initial foot care strategies, such as remov- ing shoes and socks at all diabetes-related visits to facilitate examination and reminding providers of the need for an annual comprehensive exam. In addition, home care, such as appropriate daily care and foot- wear are initial education topics the educator can address. As part of continuing education, the diabetes educator can: • Review prevention strategies for complications and symptoms to report to physicians. • Conduct foot inspections and to screen for neuropathy (checking pulses, reflexes and sensation with a monofilament) using standard screening instruments . http://www.med.umich.edu/ mdrtc/profs/survey.html#mnsi After the diagnosis of neuropathy, the diabetes educator can: • Assist patient to cope with the bad news of a complication. Offer reassurance that amputa- tions are not an inevitable result. 32 • Provide information about medi- cations available for pain relief and other strategies to ease pain (e.g. keeping bed covers away from painful feet). • Emphasize the critical impor- tance of foot care and provide personalized strategies to prevent trauma. Stress the importance of protecting the feet, inspecting for injury and seeking prompt treatment for any issues. • Work with the patient to create a daily plan for foot care that accommodates the patient’s physical findings, schedule, lifestyle and culture. Recommendations In the Arab countries, the high prevalence of the Diabetic Painful Neuropathy is actually leading to significant morbidity and disability, which could also create an economic burden. Accordingly, there is a great need to tackle this problem , even though DPN may not be life threaten- ing issue, such as the macrovascular complications of diabetes. Yet DPN negatively impacts the quality of life. The recommendations included hereunder provide guidance on appropriate care and measures that can be modified according to suit the needs of each country. A) The Establishment of Painful Neuropathy Leaders: Programs should be targeting key doctors concerned with painful neuropathy in a way to train the trainers. These programs should be designed in a way to enables these key doctors to deliver the same materials and messages to the primary health care provid- ers in their area, including, but not limited to family physicians , nurses, and diabetes educators. B) Lay people targeted campaigns should be designed using the suitable tools
  • 7. 182Volume 12, Number 4, 2013 • CLINICAL DIABETES (MIDDLE EAST EDITION) L O C A L A R T I C L E S for each community aiming to increase public awareness of the neuropathic pain problem and the possible ways of prevention with a special focus on the glycemic control. For a more in depth and recent review of diabetic neuropathy33 Disclosure: Authors of this article have no relevant financial relationships to disclose. This article is a part of an edu- cational activity supported & sponsored without restriction by Pfizer. References 1. International Diabetes Federation. IDF diabetes atlas, 5th Edition, 2011 2. Samir H Assaad-Khalil, Adel Zaki, Magdy H Megallaa. Assessment of Patients Characteristics, Metabolic Control and Therapeutic Management of Diabetic Patients in Egypt: Results from the Cross-sectional Wave-2006 of the International Diabetes Management Practices Study (IDMPS). ICIUM Congress, Antalya, Turkey, November 2011. 3. Al-Baghli NA, Al-Turki KA, Al-Ghamdi AJ, El-Zubaier AG, Al-Ameer MM, Al-Baghli FA. Control of diabetes mellitus in the Eastern Province of Saudi Arabia: results of screen- ing campaign. East Mediterr Health j 2010 Jun;16(6):621-9. 4. Abdulmohsen H. Al-Elq. Current practice in the man- agement of patients with type 2 diabetes Mellitus in Saudi Arabia. Saudi Medical Journal. Saudi Med J. 2009 Dec;30(12):1551-6 5. Solomon Tesfaye, Andrew J.M. Boulton, Rayaz A. Malik, On behalf of the Toronto Diabetic Neuropathy Expert Group . Diabetic Neuropathies: Update on Definitions, Diagnostic Criteria, Estimation of Severity, and Treatments. Diabetes Care. 2010;33:2285–2293 6. Andrew J.M. Boulton , Arthur I. Vinik , Joseph C. Arezzo , Diabetic Neuropathies , A statement by the American Diabetes Association Diabetes Care. 2005;28:956–962 7. Vinik AI, Maser RE, Mitchell BD, Freeman R: Diabetic auto- nomic neuropathy (Technical Review). Diabetes Care. 2003;26:1553–1579 8. Thomas PK: Classification, dif- ferential diagnosis, and staging of diabetic peripheral neuropa- thy. Diabetes. 1997;46 (Suppl. 2):S54– S57 9. Apfel SC, Asbury AK, Bril V, Burns TM, Campbell JN, Chalk CH, Dyck PJ, Dyck PJ, Feldman EL, Fields HL, Grant IA, Griffin JW, Klein CJ, Lindblom U, Litchy WJ, Low PA, Melanson M, Mendell JR, Merren MD, O’Brien PC, Rendell M, Rizza RA, Service FJ, Thomas PK, Walk D, Wang AK, Wessel K, Windebank AJ, Ziegler D, Zochodne DW, Ad Hoc Panel on Endpoints for Diabetic Neuropathy Trials. Positive neuropathic sensory symp- toms as endpoints in diabetic neuropathy trials. J Neurol Sci 2001;189:3–5 10. Dyck PJ, Overland CJ, Low PA, Litchy WJ, Davies JL, Dyck PJ, O’Brien PC, Cl vs. NPhys Trial Investigators, Albers JW, Andersen H, Bolton CF, England JD, Klein CJ, Llewelyn JG, Mauermann ML, Russell JW, Singer W, Smith AG, Tesfaye S, Vella A. Signs and symptoms versus nerve conduction studies to diagnose diabetic sensorimotor polyneu- ropathy: CI vs. NPhys trial. Muscle Nerve 2010;42: 157–164 11. Dyck PJ. Detection, char- acterization, and staging of polyneuropathy: assessed in diabetics. Muscle Nerve 1988;11:21–32 12. Treede RD, Jensen TS, Campbell JN, Cruccu G, Dostrovsky JO, Griffin JW, Hansson P, Hughes R, Nurmikko T, Serra J. Neuropathic pain: redefini- tion and a grading system for clinical and research purposes. Neurology 2008;70:1630–1635 13. Boulton AJ, Malik RA, Arezzo JC, Sosenko JM. Diabetic somatic neuropathies. Diabetes Care 2004;27:1458–1486 14. Cruccu G, Anand P, Attal N, Garcia-Larrea L, Haanpa¨a¨ M, Jørum E, Serra J, Jensen TS. EFNS guidelines on neuro- pathic pain assessment. Eur J Neurol 2004 Mar;11:153–162 15. Vinik EJ, Hayes RP, Oglesby A, Bastyr E, Barlow P, Ford- Molvik SL, Vinik AI. The development and validation of the Norfolk QOL-DN, a new measure of patients’ perception of the effects of diabetes and diabetic neuropathy. Diabetes Technol Ther 2005;7:497–508 16. S Jambart, Z Ammache, F Haddad, A Younes, A Hassoun, K Abdalla, C ABou Selwan, N Sunna, D Wajsbrot and E Yousef. Prevalence of Painful Diabetic Peripheral Neuropathy among Patients with Diabetes Mellitus in the Middle East Region. J Int Med Res. 2011;39: 366-377 17 . Tesfaye S. Advances in the management of diabetic peripheral neuropathy. Curr Opin Support Palliat Care 2009;3:136– 143 18. Ziegler D, Nowak H, Kempler P, Vargha P, Low PA. Treatment of symptomatic diabetic polyneuropathy with the antioxidant alpha-lipoic acid: a meta-analysis. Diabet Med 2004;21:114–121 19. Tesfaye S, Watt J, Benbow SJ, Pang KA, Miles J, MacFarlane IA. Electrical spinal cord stimulation for painful diabetic peripheral neuropathy. Lancet 1996;348:1698–1701 20. Jensen TS, Backonja MM,
  • 8. 183 Volume 12, Number 4, 2013 • CLINICAL DIABETES (MIDDLE EAST EDITION) L O C A L A R T I C L E S Hernández Jiménez S, Tesfaye S, Valensi P, Ziegler D. New perspectives on the manage- ment of diabetic peripheral neuropathic pain. Diab Vasc Dis Res 2006;3:108–119 21. McQuay HJ, Tramèr M, Nye BA, Carroll D, Wiffen PJ, Moore RA. A systematic review of antidepressants in neuropathic pain. Pain 1996;68:217–227 22. Freeman R, Durso-Decruz E, Emir B. Efficacy, safety, and tolerability of pregabalin treatment for painful diabetic peripheral neuropathy: findings from seven randomized, con- trolled trials across a range of doses. Diabetes Care 2008;31: 1448–1454 23. Lunn MP, Hughes RA, Wiffen PJ. Duloxetine for treating painful neuropathy or chronic pain. Cochrane Database Syst Rev 2009;7:CD007115 24. Selvarajah D, Gandhi R, Emery CJ, Tesfaye S. Randomized placebo-controlled double-blind clinical trial of cannabis based medicinal product (Sativex) in painful diabetic neuropathy: depression is a major con- founding factor. Diabetes Care 2010;33:128–130 25. Baron R, Mayoral V, Leijon G, Binder A, Steigerwald I, Serpell M. 5% lidocaine medicated plaster versus pregabalin in post-herpetic neuralgia and diabetic polyneuropathy: an open-label, non-inferiority two- stage RCT study. Curr Med Res Opin 2009;25:1663–1676 26. Dan Ziegler , Painful Diabetic Neuropathy Advantage of novel drugs over old drugs? Diabetes Care 2009;32 Supplement 2:S414–S419 27. S Bohlega, T Alsaadi, A Amir, H Hosny, AM Karawagh, D Moulin, N Riachi, A Salti and S Shelbaya . Guidelines for the Pharmacological Treatment of Peripheral Neuropathic Pain: Expert Panel Recommendations for the Middle East Region . J Int Med Res. 2010;38:295-317 28. American Diabetes Association. Standards of medical care in diabetes. Diabetes Care 2013;36(Suppl1):S11-66. 29. Haas L, Maryniuk M, Beck J, Cox CE, Duker P, Edwards L, Fisher E, Hanson L, Kent D, Kolb L, McLaughlin S, Orzeck E, Piette JD, Rhinehart AS, Rothman R, Sklaroff S, Tomky D, Youssef G. National Standards for Diabetes Self- management Education and Support. Diabetes Care 2012;35:2393-2401. 30. Boulton AJ, Armstrong DG, Albert SF, Frykberg RG, Hellman R, Kirkman MS, Lavery LA, Lemaster JW, Mills JL Sr, Mueller MJ, Sheehan P, Wukich DK, American Diabetes Association; American Association of Clinical Endocrinologists. Comprehensive foot exami- nation and risk assessment. Diabetes Care 2008;31:1679-85. 31. Apelqvist J, Bakker K, van Houtum WH, Nabuurs- Franssen MH, Schaper NC. International consensus and practical guidelines on the management and the preven- tion of the diabetic foot. Diabetes Metab. Res. Rev. 2000;16:S84–S92. 32. Dorresteijn JAN, Kriegsman DMW, Assendelft WJJ, Valk GD. Patient education for p preventing diabetic foot ulcer- ation. Cochrane Database of Systematic Reviews 2012, Issue Issue 10. Art. No.: CD001488. pub4. 33. Solomon Tesfaye, Andrew J.M. Boulton, Anthony H. Dickerson, Mechanisms andManagement of Diabetic Painful Distal Symmetrical Polyneuropathy. Diabetes Care 2013;36:2456–2465 CLINICALDIABETESME.ONLINEDIABETES.NET 12 4 2013 2013 Contact Information : Mailing Address: 3119 Trees of Avalon Parkway, McDonough , GA 30253 Telephone: 678 759 1561 E-Mail: mahmoud@arab-diabetes.com