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Childhood
epilepsy
AREVIEW
DR OMAR ALI NAFI
MRCP
EPILEPSY DEFINITION
 Seizure Disturbance in the electrical activity of the brain
 Epilepsy Is recurrent (2 or more) unprovoked seizures
 Transient provoked seizures caused by
fever
electrolyte imbalance
toxic expos
head injury
Are not classified as epilepsy
Status epilepticus
 Continuous seizures >5 minutes , generalized or focal ,
during which the patient remains unconscious or has 2
or more sequential seizures without full recovery of
consciousness between seizures .
Etiology
 70% Unknown cause
 30% are due to the following:
 Head trauma
 Poisoning
 Infection
 Maternal injury
 Brain tumor and CVA
Classification of epilepsy
3 classifications
 1- accordind to semiology :
generalized
partial :simple ,complex
 2-according to cause :
idiopathic
sypmtomatic
cryptogenic
3-according to clinical + EEG + age : syndromic
classification
PARTIAL SEIZURES
 a. Simple partial (no impairment of consciousness) -
motor/sensory/autonomic/psychic
 b. Complex partial (impairment of consciousness)
- simple evolving to complex
- complex from outset
 c. Partial seizures evolving to secondary GTCS
GENERALIZED SEIZURES
The first clinical and EEG changes indicate involvement of both cerebral
hemispheres.
 a. Absence
 b. Myoclonic
 c. Clonic
 d. Tonic
 e. Tonic-clonic
 f. Atonic
Generalized convulsive (grand
mal) or generalized tonic-clonic
 sudden, immediate loss of consciousness
without warning
 initial generalized tonic contraction and
posture (causing fall and epileptic cry)
 then, generalized, bisynchronous rhythmic
forceful jerking movements
 slowing of the frequency of the convulsive
movements
 Typically last 1-3 minutes
 post-ictal exhaustion, sleep, disorientation
Childhood Absence Epilepsy
 Seizure type: simple
absence seizures. 1/3 or less
will also have at least one
generalized tonic-clonic
seizure. Often frequent
(many per day).
 Etiology: unknown
(idiopathic). often familial.
 Age: childhood (5-12years)
 EEG: generalized 3/sec spike
and wave discharges.
 Treatment: ethosuximide or
valproic acid.
 Prognosis: excellent. easy
seizure control. remission in
70% or more. few with long
term sequellae
No aura
Abrupt onset
Brief duration
Prompt recovery
Epileptic Syndromes
West syndrome
 Infantile spasm
 Described>170 yr ago
 Triad of:
- Infantile spasm flexor extensor
mixed
- Arrest psychomotor development
- Hypsarrythmia
 Onset peak 4-7 months
 Alwayas before 1yr age
 Treatment :
- ACTH
- VIGABATRIN
Fp1-F3
F3-C3
C3-P3
P3-O1
Fp2-F4
F4-C4
C4-P4
P4-O2
Fp1-F7
F7-T3
T3-T5
T5-O1
Fp2-F8
F8-T4
T4-T6
T6-O2
1 sec
50 µV
Hypsarrhythmia Electrodecremental
Seizure
Juvenile Myoclonic Epilepsy
 Seizure type: early morning
myoclonic seizures (single or
multiple myoclonic jerks). absence
seizures. generalized tonic-clonic
seizures.
 Etiology: unknown (idiopathic).
often familial. presumed ion
channel?
 Age: childhood (10-16years); female
predominance.
 EEG: generalized fast spike and
wave discharges (4 to 6 cycles/sec)
often with photosensitivity.
 Treatment: valproic acid.
 Prognosis: generally excellent
seizure control possible but
remission is rare
Rolandic Epilepsy
 The most common seizure disorder of
childhood.
 Seizure type: partial or secondarily
generalized sensory-motor seizures occurring
at the transitions between wakefulness and
sleep. usually affect oral-motor function
particularly. infrequent (weekly or less)
 Etiology: unknown (idiopathic). often
familial. presumed ion channel?.
 Age: childhood (5-12years)
 EEG: focal, centrotemporal (Rolandic) spikes.
 Treatment: no treatment or carbamazepine.
 Prognosis: excellent. easy seizure control.
remission in 95%. no long term sequellae.
EVALUATION
 Detailed history
 Physical examination
 EEG
 Labs
 Imaging technique
HISTORY
 Carefull detailed history corner stone for accurate
diagnosis
 Video tape the event diagnostic
 Ask parents to mimic the event
 Physician may mimic different seizure type to find a
match with the child event
Phisical examination
 Anthroprometric parameteres measured and
plotted
 Vital signs
fever---hypothermia
BlP bradicardia alt concious ICP
 Meningeal signs
neck stiffiness meningencephalities
subarachnoide hemorrage
cerebellar herniation
Physical exam cont
 Examination of skull
shape
fontanelle size tension
sututre prem closure
wide separation
Physical examination cont
 Ophthalmic examination
lisch nodule
retinitis pigmentosa
cherry red spots
Physical examination cont
Skin examination
ash leaf spots
facial angioma
café au lait spot
Investigation
 Laboratory testing
electrolytes
ca po4 alp
mg
glucose
 Febrile child
CBC
blood and urine culture
 Lumbar puncture
strongly 12 mo or if
previous antibiotics
considered 12-18 mo
indication more 18
electroencephalogaphy
 EEG
56% abnormal in newly dx epileptics repeat additional
11%
20% of epileptics repeatedly normal EEG
5% of normal children epileptiformeactivity
Neuroimaging cont
Indications
partial onset seizure
focal or new focal deficit
neonatal
persistent altered mental status
HX of anticouagulation
HX of cancer
Differential diagnosis cont
 BREATH HOLDING SPELLS
cyanotic spells
Always provocated
Cry-apnea-cyanosis-loc-myoclonic
Onset 6 mo---peak 2yr abate 5 yr
EEG normal
pallid spells
Trauma to the back of head or startle
Apnea—loc—pallor---hypotonia—tonic
EEG normal
Differential diagnosis cnt
SYNCOPE
Decrease blood flow----hypotension
Loss of conciousness—deviation of eyes
Provoked by pain fear excitement
Rare before 10-12 years
More in females
Differential diagnosis cont
 Prolonged Q-T syndrome
sudden LOC during exercise or
emotional orstressfull experience
Onset late childhood or adolescence
during event recover or die
Treatment
 Medication
 Vagus Nerve stimulator
 Surgical
 Dietary
Medication
• Zonisamide - 2000
• Leveteracetam - 1999
• Tagabine - 1998
• Topiramate - 1996
• Lamotrigine - 1994
• Felbamate - 1993
• Gabapentin - 1993
• Vigabatrin - 1992
• Valproic Acid - 1973
• Carbamazepine - 1965
• Ethosuximide - 1955
• Primidone - 1950
• Phenytoin - 1938
• Phenobarbitone - 1912
DRUGS NAME YEAR
Phenobarbitone (Luminal)
• Used for all types and
all ages.
• Nowadays also used
for treatment of neonatal
seizures, and status
epilepticus
• Side effects:
•1)In children 
Hyperactivity, cognitive
impairment.
•2)In adults 
•Sedation
Phenytoin (Epanuten)
• Broad spectrum
•The drug of choice in
Status epilepticus
•Follows Zero-order
pharmacokinetics
•Side effects:
•1)May reach toxic levels
•2)Hirsutism
•3)Coarse features
•4)Hypertrophic gums
Ethusoximide (Zarontin)
• Narrow spectrum
•The drug of choice in
Absence epilepsy
•Side effects:
•1) Skin rash
•2)Agranulocytosis
Carbamazipine (Tegretol)
• The drug of choice in
Partial seizures, also
used in complex
seizures, and
secondary
generalization.
• Also used in treatment
of trigeminal neuralgia.
• Side effects:
•1) Skin rash
•2) Agranulocytosis
•3) Hyponatremia
Valproic acid (Depakine)
• Broad spectrum
• A component in all anti-
epileptic regimens.
• When given with
Lamotrigine, the dose should
be lowered to (1/10 th) of the
usual dose, since Valproic
acid increases the half life of
Lamotrigine.
•Mood stabilizer
• Side effects:
1)Hepatotoxic
2)Transient hair loss
3)Weight gain
Vigabatrin (Sabril)
• New generation anti-
eplipletic drugs
• The drug of choice in
West syndrome( which
results from tuberculous
sclerosis)
• Side effects:
1)Visual field defects
Gabapentin (Neurontin)
• Broad spectrum
• Has no interactions
with other drugs
• Safe to be used in
organ failure( Liver or
renal failure)
• Used in treatment of
neuropathic pain
Lamotrigine (Lamictal)
• Broad spectrum
• Side effects:
•1) Measeles like rash
•2) Stevens Johnson
syndrome
Topiramate (Topamax)
• Broad spectrum
• Used for intractable partial
complex seizures especially
in combination with tegretol
•Also used in prophylaxis of
migraine
•Side effects:
•1)Renal stones
•2)Decreases attention and
ability to concentrate
Levetiracetam (Keppra)
• Used for children and
neonate age group
•Used as a primary drug.
Treatment
 Primary generalized
valproic acid
 Infantile spasm
steroids
vigabatrin
 Partial seizures
carbamazepine
 ABSENCE EPILEPSY
ethosuxamide
valproic acid
lamotrigine
Treatment
 MOST OF AEDs
start small dose then increase
if max dose reached no response serum
level
routine drug level discouraged
 MONOTHERAPY
avoide interaction
better compliance
 BEFORE switching to another drug reconsider
DX
Treatment
SIDE EFFECT
 Most are idiosyncratic
 Skin rash
 Steven johonson syndrome
 Hepatotoxicity
 pancreatitis
Medication
Phenytoin (Dilantin)
 Gingival hyperplasia occuring in approximately 20% of
patients.
Guidelines for discontinuation
AEDs
 seizure free 2-5 years on AEDs mean 3.5 years
 single type of partial generalized seizures
 normal neurological and IQ examination
 EEG normalized with treatment
Vagus Nerve Stimulator
 Limited for localization related epilepsy
 Implanted device
 Stimulates the left vagus nerve for 30 seconds every
five minutes
 30% experiences 50% reduction in seizure activity
Surgical
 First surgery in 1886
 Only utilized when medication cannot achieve
satisfactory control
 INDICATIONS:
 intractable partial seizures
 intractable hemiepilepsy
 Mesial temporal sclerosis
Dietary
Ketogenic diet (Metabolic shift-Ketosis state)
 High fat and oils
 High calorie
 Low in proteins
 Low in carbohydrates
THANK YOU

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epilepsy 2022.pptx

  • 2. EPILEPSY DEFINITION  Seizure Disturbance in the electrical activity of the brain  Epilepsy Is recurrent (2 or more) unprovoked seizures  Transient provoked seizures caused by fever electrolyte imbalance toxic expos head injury Are not classified as epilepsy
  • 3. Status epilepticus  Continuous seizures >5 minutes , generalized or focal , during which the patient remains unconscious or has 2 or more sequential seizures without full recovery of consciousness between seizures .
  • 4. Etiology  70% Unknown cause  30% are due to the following:  Head trauma  Poisoning  Infection  Maternal injury  Brain tumor and CVA
  • 5. Classification of epilepsy 3 classifications  1- accordind to semiology : generalized partial :simple ,complex  2-according to cause : idiopathic sypmtomatic cryptogenic 3-according to clinical + EEG + age : syndromic classification
  • 6. PARTIAL SEIZURES  a. Simple partial (no impairment of consciousness) - motor/sensory/autonomic/psychic  b. Complex partial (impairment of consciousness) - simple evolving to complex - complex from outset  c. Partial seizures evolving to secondary GTCS
  • 7. GENERALIZED SEIZURES The first clinical and EEG changes indicate involvement of both cerebral hemispheres.  a. Absence  b. Myoclonic  c. Clonic  d. Tonic  e. Tonic-clonic  f. Atonic
  • 8. Generalized convulsive (grand mal) or generalized tonic-clonic  sudden, immediate loss of consciousness without warning  initial generalized tonic contraction and posture (causing fall and epileptic cry)  then, generalized, bisynchronous rhythmic forceful jerking movements  slowing of the frequency of the convulsive movements  Typically last 1-3 minutes  post-ictal exhaustion, sleep, disorientation
  • 9. Childhood Absence Epilepsy  Seizure type: simple absence seizures. 1/3 or less will also have at least one generalized tonic-clonic seizure. Often frequent (many per day).  Etiology: unknown (idiopathic). often familial.  Age: childhood (5-12years)  EEG: generalized 3/sec spike and wave discharges.  Treatment: ethosuximide or valproic acid.  Prognosis: excellent. easy seizure control. remission in 70% or more. few with long term sequellae No aura Abrupt onset Brief duration Prompt recovery
  • 10. Epileptic Syndromes West syndrome  Infantile spasm  Described>170 yr ago  Triad of: - Infantile spasm flexor extensor mixed - Arrest psychomotor development - Hypsarrythmia  Onset peak 4-7 months  Alwayas before 1yr age  Treatment : - ACTH - VIGABATRIN Fp1-F3 F3-C3 C3-P3 P3-O1 Fp2-F4 F4-C4 C4-P4 P4-O2 Fp1-F7 F7-T3 T3-T5 T5-O1 Fp2-F8 F8-T4 T4-T6 T6-O2 1 sec 50 µV Hypsarrhythmia Electrodecremental Seizure
  • 11. Juvenile Myoclonic Epilepsy  Seizure type: early morning myoclonic seizures (single or multiple myoclonic jerks). absence seizures. generalized tonic-clonic seizures.  Etiology: unknown (idiopathic). often familial. presumed ion channel?  Age: childhood (10-16years); female predominance.  EEG: generalized fast spike and wave discharges (4 to 6 cycles/sec) often with photosensitivity.  Treatment: valproic acid.  Prognosis: generally excellent seizure control possible but remission is rare
  • 12. Rolandic Epilepsy  The most common seizure disorder of childhood.  Seizure type: partial or secondarily generalized sensory-motor seizures occurring at the transitions between wakefulness and sleep. usually affect oral-motor function particularly. infrequent (weekly or less)  Etiology: unknown (idiopathic). often familial. presumed ion channel?.  Age: childhood (5-12years)  EEG: focal, centrotemporal (Rolandic) spikes.  Treatment: no treatment or carbamazepine.  Prognosis: excellent. easy seizure control. remission in 95%. no long term sequellae.
  • 13. EVALUATION  Detailed history  Physical examination  EEG  Labs  Imaging technique
  • 14. HISTORY  Carefull detailed history corner stone for accurate diagnosis  Video tape the event diagnostic  Ask parents to mimic the event  Physician may mimic different seizure type to find a match with the child event
  • 15. Phisical examination  Anthroprometric parameteres measured and plotted  Vital signs fever---hypothermia BlP bradicardia alt concious ICP  Meningeal signs neck stiffiness meningencephalities subarachnoide hemorrage cerebellar herniation
  • 16. Physical exam cont  Examination of skull shape fontanelle size tension sututre prem closure wide separation
  • 17. Physical examination cont  Ophthalmic examination lisch nodule retinitis pigmentosa cherry red spots
  • 18.
  • 19. Physical examination cont Skin examination ash leaf spots facial angioma café au lait spot
  • 20.
  • 21. Investigation  Laboratory testing electrolytes ca po4 alp mg glucose  Febrile child CBC blood and urine culture  Lumbar puncture strongly 12 mo or if previous antibiotics considered 12-18 mo indication more 18
  • 22. electroencephalogaphy  EEG 56% abnormal in newly dx epileptics repeat additional 11% 20% of epileptics repeatedly normal EEG 5% of normal children epileptiformeactivity
  • 23. Neuroimaging cont Indications partial onset seizure focal or new focal deficit neonatal persistent altered mental status HX of anticouagulation HX of cancer
  • 24. Differential diagnosis cont  BREATH HOLDING SPELLS cyanotic spells Always provocated Cry-apnea-cyanosis-loc-myoclonic Onset 6 mo---peak 2yr abate 5 yr EEG normal pallid spells Trauma to the back of head or startle Apnea—loc—pallor---hypotonia—tonic EEG normal
  • 25. Differential diagnosis cnt SYNCOPE Decrease blood flow----hypotension Loss of conciousness—deviation of eyes Provoked by pain fear excitement Rare before 10-12 years More in females
  • 26. Differential diagnosis cont  Prolonged Q-T syndrome sudden LOC during exercise or emotional orstressfull experience Onset late childhood or adolescence during event recover or die
  • 27. Treatment  Medication  Vagus Nerve stimulator  Surgical  Dietary
  • 29. • Zonisamide - 2000 • Leveteracetam - 1999 • Tagabine - 1998 • Topiramate - 1996 • Lamotrigine - 1994 • Felbamate - 1993 • Gabapentin - 1993 • Vigabatrin - 1992 • Valproic Acid - 1973 • Carbamazepine - 1965 • Ethosuximide - 1955 • Primidone - 1950 • Phenytoin - 1938 • Phenobarbitone - 1912 DRUGS NAME YEAR
  • 30. Phenobarbitone (Luminal) • Used for all types and all ages. • Nowadays also used for treatment of neonatal seizures, and status epilepticus • Side effects: •1)In children  Hyperactivity, cognitive impairment. •2)In adults  •Sedation
  • 31. Phenytoin (Epanuten) • Broad spectrum •The drug of choice in Status epilepticus •Follows Zero-order pharmacokinetics •Side effects: •1)May reach toxic levels •2)Hirsutism •3)Coarse features •4)Hypertrophic gums
  • 32. Ethusoximide (Zarontin) • Narrow spectrum •The drug of choice in Absence epilepsy •Side effects: •1) Skin rash •2)Agranulocytosis
  • 33. Carbamazipine (Tegretol) • The drug of choice in Partial seizures, also used in complex seizures, and secondary generalization. • Also used in treatment of trigeminal neuralgia. • Side effects: •1) Skin rash •2) Agranulocytosis •3) Hyponatremia
  • 34. Valproic acid (Depakine) • Broad spectrum • A component in all anti- epileptic regimens. • When given with Lamotrigine, the dose should be lowered to (1/10 th) of the usual dose, since Valproic acid increases the half life of Lamotrigine. •Mood stabilizer • Side effects: 1)Hepatotoxic 2)Transient hair loss 3)Weight gain
  • 35. Vigabatrin (Sabril) • New generation anti- eplipletic drugs • The drug of choice in West syndrome( which results from tuberculous sclerosis) • Side effects: 1)Visual field defects
  • 36. Gabapentin (Neurontin) • Broad spectrum • Has no interactions with other drugs • Safe to be used in organ failure( Liver or renal failure) • Used in treatment of neuropathic pain
  • 37. Lamotrigine (Lamictal) • Broad spectrum • Side effects: •1) Measeles like rash •2) Stevens Johnson syndrome
  • 38. Topiramate (Topamax) • Broad spectrum • Used for intractable partial complex seizures especially in combination with tegretol •Also used in prophylaxis of migraine •Side effects: •1)Renal stones •2)Decreases attention and ability to concentrate
  • 39. Levetiracetam (Keppra) • Used for children and neonate age group •Used as a primary drug.
  • 40. Treatment  Primary generalized valproic acid  Infantile spasm steroids vigabatrin  Partial seizures carbamazepine  ABSENCE EPILEPSY ethosuxamide valproic acid lamotrigine
  • 41. Treatment  MOST OF AEDs start small dose then increase if max dose reached no response serum level routine drug level discouraged  MONOTHERAPY avoide interaction better compliance  BEFORE switching to another drug reconsider DX
  • 42. Treatment SIDE EFFECT  Most are idiosyncratic  Skin rash  Steven johonson syndrome  Hepatotoxicity  pancreatitis
  • 43. Medication Phenytoin (Dilantin)  Gingival hyperplasia occuring in approximately 20% of patients.
  • 44.
  • 45. Guidelines for discontinuation AEDs  seizure free 2-5 years on AEDs mean 3.5 years  single type of partial generalized seizures  normal neurological and IQ examination  EEG normalized with treatment
  • 46. Vagus Nerve Stimulator  Limited for localization related epilepsy  Implanted device  Stimulates the left vagus nerve for 30 seconds every five minutes  30% experiences 50% reduction in seizure activity
  • 47. Surgical  First surgery in 1886  Only utilized when medication cannot achieve satisfactory control  INDICATIONS:  intractable partial seizures  intractable hemiepilepsy  Mesial temporal sclerosis
  • 48. Dietary Ketogenic diet (Metabolic shift-Ketosis state)  High fat and oils  High calorie  Low in proteins  Low in carbohydrates