The document discusses diseases and abnormalities of the nails. It covers:
1. The anatomy and growth of normal nails.
2. Common nail disorders including trauma, fungal infections, psoriasis, and nail changes associated with systemic diseases.
3. Nail tumors such as warts and melanomas that can appear under the nail.
4. Rare inherited nail disorders with characteristic thickened or malformed nails.
Pigmentation disorders of skin dermatology revision notesTONY SCARIA
dermatology revision notes for neet pg preparation based on lecture notes with high yield topic & last minute revision notes based on previous year questions
Pigmentation disorders of skin dermatology revision notesTONY SCARIA
dermatology revision notes for neet pg preparation based on lecture notes with high yield topic & last minute revision notes based on previous year questions
INTRODUCTION OF PSORIASIS, EPIDEMIOLOGY OF PSORIASIS, CLINICAL FEATURES OF PSORIASIS, PROGNOSIS OF PSORIASIS, HISTOPATHOLOGY OF PSORIASIS, TRIGGERING FACTORS OF PSORIASIS, PATHOGENESIS OF PSORIASIS
about various genodermatoses and classified according to clinical presentation.
mentioned are introduction clinical features histology management of each disease.
• In recent years, the usefulness of trichoscopy (scalp dermoscopy) (videodermatoscopy) has been reported for diagnosing hair loss diseases. This method allows viewing of the hair and scalp at X20 to X160 magnifications. Characteristic trichoscopy features of alopecia areata are black dots, tapering hairs (exclamation mark hairs), broken hairs, yellow dots, and short vellus hairs. In androgenetic alopecia (AGA), hair diameter diversity (HDD), perifollicular pigmentation/peripilar sign, and yellow dots are trichoscopically observed. In all cases of AGA and female AGA, HDD, more than 20%, which corresponds to vellus transformation, can be seen. In cicatricial alopecia (CA), the loss of orifices, a hallmark of CA, and the associated changes including perifollicular erythema or scale and hair tufting were observed. Different hair shafts variation such as vellus, terminal, micro-exclamation mark type, monilethrix, Netherton type, and pili annulati hairs can be seen . The number of hairs in one pilosebaceous unit can be assessed. Healthy Hair follicles variation healthy, empty, fibrotic ("white dots"), filled with hyperkeratotic plugs ("yellow dots"), or containing dead hair ("black dots"). Abnormalities of scalp skin color or structure include honeycomb-type hyperpigmentation, perifollicular discoloration (hyperpigmentation), and scaling are also seen with the help of trichoscopy.
a brief review of nail diseases by, Dr. Mohammad Baghaei Mohammad Baghaei
The nail organ is an integral component of the digital tip. It is a highly versatile tool that protects the fingertip, contributes to tactile sensation by acting as a counterforce to the fingertip pad, and aids in peripheral thermoregulation via glomus bodies in the nail bed and matrix. Because of its form and functionality, abnormalities of the nail unit result in functional and cosmetic issues ...
INTRODUCTION OF PSORIASIS, EPIDEMIOLOGY OF PSORIASIS, CLINICAL FEATURES OF PSORIASIS, PROGNOSIS OF PSORIASIS, HISTOPATHOLOGY OF PSORIASIS, TRIGGERING FACTORS OF PSORIASIS, PATHOGENESIS OF PSORIASIS
about various genodermatoses and classified according to clinical presentation.
mentioned are introduction clinical features histology management of each disease.
• In recent years, the usefulness of trichoscopy (scalp dermoscopy) (videodermatoscopy) has been reported for diagnosing hair loss diseases. This method allows viewing of the hair and scalp at X20 to X160 magnifications. Characteristic trichoscopy features of alopecia areata are black dots, tapering hairs (exclamation mark hairs), broken hairs, yellow dots, and short vellus hairs. In androgenetic alopecia (AGA), hair diameter diversity (HDD), perifollicular pigmentation/peripilar sign, and yellow dots are trichoscopically observed. In all cases of AGA and female AGA, HDD, more than 20%, which corresponds to vellus transformation, can be seen. In cicatricial alopecia (CA), the loss of orifices, a hallmark of CA, and the associated changes including perifollicular erythema or scale and hair tufting were observed. Different hair shafts variation such as vellus, terminal, micro-exclamation mark type, monilethrix, Netherton type, and pili annulati hairs can be seen . The number of hairs in one pilosebaceous unit can be assessed. Healthy Hair follicles variation healthy, empty, fibrotic ("white dots"), filled with hyperkeratotic plugs ("yellow dots"), or containing dead hair ("black dots"). Abnormalities of scalp skin color or structure include honeycomb-type hyperpigmentation, perifollicular discoloration (hyperpigmentation), and scaling are also seen with the help of trichoscopy.
a brief review of nail diseases by, Dr. Mohammad Baghaei Mohammad Baghaei
The nail organ is an integral component of the digital tip. It is a highly versatile tool that protects the fingertip, contributes to tactile sensation by acting as a counterforce to the fingertip pad, and aids in peripheral thermoregulation via glomus bodies in the nail bed and matrix. Because of its form and functionality, abnormalities of the nail unit result in functional and cosmetic issues ...
Hand infection is the infection caused in hand , since hand contains neurovascular bundles, muscles, bones, and ligaments.
It includes
1. Acute Paronychia
2.Chronic Paronychia
3.Terminal pulp space infection ( felon)
4.subungal infection
5. Web space infecion
6. Mid palmar space infection
7.Thenar space infection
8. Deep palmar abscess
9. Acute suppurative tenosynovitis
11. Chronic Tenosynovitis
12. Lymphangitis of the hand
13. Arthritis of hand joints
14. Subcuticular abscess
The IOSR Journal of Pharmacy (IOSRPHR) is an open access online & offline peer reviewed international journal, which publishes innovative research papers, reviews, mini-reviews, short communications and notes dealing with Pharmaceutical Sciences( Pharmaceutical Technology, Pharmaceutics, Biopharmaceutics, Pharmacokinetics, Pharmaceutical/Medicinal Chemistry, Computational Chemistry and Molecular Drug Design, Pharmacognosy & Phytochemistry, Pharmacology, Pharmaceutical Analysis, Pharmacy Practice, Clinical and Hospital Pharmacy, Cell Biology, Genomics and Proteomics, Pharmacogenomics, Bioinformatics and Biotechnology of Pharmaceutical Interest........more details on Aim & Scope).
All manuscripts are subject to rapid peer review. Those of high quality (not previously published and not under consideration for publication in another journal) will be published without delay.
Denture induced lesions /orthodontic courses by Indian dental academy Indian dental academy
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
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Title: Sense of Taste
Presenter: Dr. Faiza, Assistant Professor of Physiology
Qualifications:
MBBS (Best Graduate, AIMC Lahore)
FCPS Physiology
ICMT, CHPE, DHPE (STMU)
MPH (GC University, Faisalabad)
MBA (Virtual University of Pakistan)
Learning Objectives:
Describe the structure and function of taste buds.
Describe the relationship between the taste threshold and taste index of common substances.
Explain the chemical basis and signal transduction of taste perception for each type of primary taste sensation.
Recognize different abnormalities of taste perception and their causes.
Key Topics:
Significance of Taste Sensation:
Differentiation between pleasant and harmful food
Influence on behavior
Selection of food based on metabolic needs
Receptors of Taste:
Taste buds on the tongue
Influence of sense of smell, texture of food, and pain stimulation (e.g., by pepper)
Primary and Secondary Taste Sensations:
Primary taste sensations: Sweet, Sour, Salty, Bitter, Umami
Chemical basis and signal transduction mechanisms for each taste
Taste Threshold and Index:
Taste threshold values for Sweet (sucrose), Salty (NaCl), Sour (HCl), and Bitter (Quinine)
Taste index relationship: Inversely proportional to taste threshold
Taste Blindness:
Inability to taste certain substances, particularly thiourea compounds
Example: Phenylthiocarbamide
Structure and Function of Taste Buds:
Composition: Epithelial cells, Sustentacular/Supporting cells, Taste cells, Basal cells
Features: Taste pores, Taste hairs/microvilli, and Taste nerve fibers
Location of Taste Buds:
Found in papillae of the tongue (Fungiform, Circumvallate, Foliate)
Also present on the palate, tonsillar pillars, epiglottis, and proximal esophagus
Mechanism of Taste Stimulation:
Interaction of taste substances with receptors on microvilli
Signal transduction pathways for Umami, Sweet, Bitter, Sour, and Salty tastes
Taste Sensitivity and Adaptation:
Decrease in sensitivity with age
Rapid adaptation of taste sensation
Role of Saliva in Taste:
Dissolution of tastants to reach receptors
Washing away the stimulus
Taste Preferences and Aversions:
Mechanisms behind taste preference and aversion
Influence of receptors and neural pathways
Impact of Sensory Nerve Damage:
Degeneration of taste buds if the sensory nerve fiber is cut
Abnormalities of Taste Detection:
Conditions: Ageusia, Hypogeusia, Dysgeusia (parageusia)
Causes: Nerve damage, neurological disorders, infections, poor oral hygiene, adverse drug effects, deficiencies, aging, tobacco use, altered neurotransmitter levels
Neurotransmitters and Taste Threshold:
Effects of serotonin (5-HT) and norepinephrine (NE) on taste sensitivity
Supertasters:
25% of the population with heightened sensitivity to taste, especially bitterness
Increased number of fungiform papillae
Prix Galien International 2024 Forum ProgramLevi Shapiro
June 20, 2024, Prix Galien International and Jerusalem Ethics Forum in ROME. Detailed agenda including panels:
- ADVANCES IN CARDIOLOGY: A NEW PARADIGM IS COMING
- WOMEN’S HEALTH: FERTILITY PRESERVATION
- WHAT’S NEW IN THE TREATMENT OF INFECTIOUS,
ONCOLOGICAL AND INFLAMMATORY SKIN DISEASES?
- ARTIFICIAL INTELLIGENCE AND ETHICS
- GENE THERAPY
- BEYOND BORDERS: GLOBAL INITIATIVES FOR DEMOCRATIZING LIFE SCIENCE TECHNOLOGIES AND PROMOTING ACCESS TO HEALTHCARE
- ETHICAL CHALLENGES IN LIFE SCIENCES
- Prix Galien International Awards Ceremony
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The prostate is an exocrine gland of the male mammalian reproductive system
It is a walnut-sized gland that forms part of the male reproductive system and is located in front of the rectum and just below the urinary bladder
Function is to store and secrete a clear, slightly alkaline fluid that constitutes 10-30% of the volume of the seminal fluid that along with the spermatozoa, constitutes semen
A healthy human prostate measures (4cm-vertical, by 3cm-horizontal, 2cm ant-post ).
It surrounds the urethra just below the urinary bladder. It has anterior, median, posterior and two lateral lobes
It’s work is regulated by androgens which are responsible for male sex characteristics
Generalised disease of the prostate due to hormonal derangement which leads to non malignant enlargement of the gland (increase in the number of epithelial cells and stromal tissue)to cause compression of the urethra leading to symptoms (LUTS
- Video recording of this lecture in English language: https://youtu.be/lK81BzxMqdo
- Video recording of this lecture in Arabic language: https://youtu.be/Ve4P0COk9OI
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Tom Selleck Health: A Comprehensive Look at the Iconic Actor’s Wellness Journeygreendigital
Tom Selleck, an enduring figure in Hollywood. has captivated audiences for decades with his rugged charm, iconic moustache. and memorable roles in television and film. From his breakout role as Thomas Magnum in Magnum P.I. to his current portrayal of Frank Reagan in Blue Bloods. Selleck's career has spanned over 50 years. But beyond his professional achievements. fans have often been curious about Tom Selleck Health. especially as he has aged in the public eye.
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Introduction
Many have been interested in Tom Selleck health. not only because of his enduring presence on screen but also because of the challenges. and lifestyle choices he has faced and made over the years. This article delves into the various aspects of Tom Selleck health. exploring his fitness regimen, diet, mental health. and the challenges he has encountered as he ages. We'll look at how he maintains his well-being. the health issues he has faced, and his approach to ageing .
Early Life and Career
Childhood and Athletic Beginnings
Tom Selleck was born on January 29, 1945, in Detroit, Michigan, and grew up in Sherman Oaks, California. From an early age, he was involved in sports, particularly basketball. which played a significant role in his physical development. His athletic pursuits continued into college. where he attended the University of Southern California (USC) on a basketball scholarship. This early involvement in sports laid a strong foundation for his physical health and disciplined lifestyle.
Transition to Acting
Selleck's transition from an athlete to an actor came with its physical demands. His first significant role in "Magnum P.I." required him to perform various stunts and maintain a fit appearance. This role, which he played from 1980 to 1988. necessitated a rigorous fitness routine to meet the show's demands. setting the stage for his long-term commitment to health and wellness.
Fitness Regimen
Workout Routine
Tom Selleck health and fitness regimen has evolved. adapting to his changing roles and age. During his "Magnum, P.I." days. Selleck's workouts were intense and focused on building and maintaining muscle mass. His routine included weightlifting, cardiovascular exercises. and specific training for the stunts he performed on the show.
Selleck adjusted his fitness routine as he aged to suit his body's needs. Today, his workouts focus on maintaining flexibility, strength, and cardiovascular health. He incorporates low-impact exercises such as swimming, walking, and light weightlifting. This balanced approach helps him stay fit without putting undue strain on his joints and muscles.
Importance of Flexibility and Mobility
In recent years, Selleck has emphasized the importance of flexibility and mobility in his fitness regimen. Understanding the natural decline in muscle mass and joint flexibility with age. he includes stretching and yoga in his routine. These practices help prevent injuries, improve posture, and maintain mobilit
Title: Sense of Smell
Presenter: Dr. Faiza, Assistant Professor of Physiology
Qualifications:
MBBS (Best Graduate, AIMC Lahore)
FCPS Physiology
ICMT, CHPE, DHPE (STMU)
MPH (GC University, Faisalabad)
MBA (Virtual University of Pakistan)
Learning Objectives:
Describe the primary categories of smells and the concept of odor blindness.
Explain the structure and location of the olfactory membrane and mucosa, including the types and roles of cells involved in olfaction.
Describe the pathway and mechanisms of olfactory signal transmission from the olfactory receptors to the brain.
Illustrate the biochemical cascade triggered by odorant binding to olfactory receptors, including the role of G-proteins and second messengers in generating an action potential.
Identify different types of olfactory disorders such as anosmia, hyposmia, hyperosmia, and dysosmia, including their potential causes.
Key Topics:
Olfactory Genes:
3% of the human genome accounts for olfactory genes.
400 genes for odorant receptors.
Olfactory Membrane:
Located in the superior part of the nasal cavity.
Medially: Folds downward along the superior septum.
Laterally: Folds over the superior turbinate and upper surface of the middle turbinate.
Total surface area: 5-10 square centimeters.
Olfactory Mucosa:
Olfactory Cells: Bipolar nerve cells derived from the CNS (100 million), with 4-25 olfactory cilia per cell.
Sustentacular Cells: Produce mucus and maintain ionic and molecular environment.
Basal Cells: Replace worn-out olfactory cells with an average lifespan of 1-2 months.
Bowman’s Gland: Secretes mucus.
Stimulation of Olfactory Cells:
Odorant dissolves in mucus and attaches to receptors on olfactory cilia.
Involves a cascade effect through G-proteins and second messengers, leading to depolarization and action potential generation in the olfactory nerve.
Quality of a Good Odorant:
Small (3-20 Carbon atoms), volatile, water-soluble, and lipid-soluble.
Facilitated by odorant-binding proteins in mucus.
Membrane Potential and Action Potential:
Resting membrane potential: -55mV.
Action potential frequency in the olfactory nerve increases with odorant strength.
Adaptation Towards the Sense of Smell:
Rapid adaptation within the first second, with further slow adaptation.
Psychological adaptation greater than receptor adaptation, involving feedback inhibition from the central nervous system.
Primary Sensations of Smell:
Camphoraceous, Musky, Floral, Pepperminty, Ethereal, Pungent, Putrid.
Odor Detection Threshold:
Examples: Hydrogen sulfide (0.0005 ppm), Methyl-mercaptan (0.002 ppm).
Some toxic substances are odorless at lethal concentrations.
Characteristics of Smell:
Odor blindness for single substances due to lack of appropriate receptor protein.
Behavioral and emotional influences of smell.
Transmission of Olfactory Signals:
From olfactory cells to glomeruli in the olfactory bulb, involving lateral inhibition.
Primitive, less old, and new olfactory systems with different path
2. The hard keratin of the nail plate is formed in
the nail matrix, which lies in an invagination of
the epidermis (the nail fold) on the back of the
terminal phalanx of each digit.
The matrix runs from the proximal end of the
floor of the nail fold to the distal margin of the
lunule.
From this area the nail plate grows forward over
the nail bed, ending in a free margin at the tip of
the digit.
3. The nail bed is capable of producing small
amounts of keratin which contribute to the nail
and which are responsible for the ‘false nail’
formed when the nail matrix is obliterated by
surgery or injury.
The cuticle acts as a seal to protect the potential
space of the nail fold from chemicals and from
infection.
The nails provide strength and protection for the
terminal phalanx. Their presence helps with fine
touch and with the handling of small objects.
4. The rate at which nails grow varies from person
to person: fingernails average between 0.5 and
1.2 mm per week, while toenails grow more
slowly.
Nails grow faster in the summer, if they are
bitten, and in youth.
They change with ageing from the thin,
occasionally spooned nails of early childhood to
the duller, paler and more opaque nails of the
very old.
5.
6.
7. A. Trauma:A. Trauma:
*Permanent ridges or splits in the nail plate can follow*Permanent ridges or splits in the nail plate can follow
damage to the nail matrix.damage to the nail matrix.
*Splinter haemorrhages, the linear nature of which is*Splinter haemorrhages, the linear nature of which is
determined by longitudinal ridges and grooves in thedetermined by longitudinal ridges and grooves in the
nail bed, are caused by:nail bed, are caused by:
-minor trauma-minor trauma
-psoriasis of the nail-psoriasis of the nail
-subacute bacterial endocarditis.-subacute bacterial endocarditis.
*Larger subungual haematomas are usually easy to*Larger subungual haematomas are usually easy to
identify but the trauma that caused them may haveidentify but the trauma that caused them may have
escaped notice and dark areas of altered blood can raiseescaped notice and dark areas of altered blood can raise
worries about the presence of a subungual melanomaworries about the presence of a subungual melanoma..
8.
9. **Chronic trauma from sport and from ill-fitting shoesChronic trauma from sport and from ill-fitting shoes
contributes to haemorrhage under the nails of the bigcontributes to haemorrhage under the nails of the big
toes, to the gross thickening of toenails known astoes, to the gross thickening of toenails known as
onychogryphosisonychogryphosis and to ingrowing nails.and to ingrowing nails.
*Onycholysis*Onycholysis, a separation of the nail plate from the, a separation of the nail plate from the
nail bed may be a result ofnail bed may be a result of
-minor trauma-minor trauma
-nail psoriasis-nail psoriasis
-thyroid disease.-thyroid disease.
Usually no cause for it is found.Usually no cause for it is found.
The space created may be colonized by yeasts, or byThe space created may be colonized by yeasts, or by
bacteria such asbacteria such as Pseudomonas aeruginosaPseudomonas aeruginosa, which turns, which turns
it an ugly green colourit an ugly green colour..
10.
11.
12. B. Nail in systemic disease:B. Nail in systemic disease:
1. Koilonychia:1. Koilonychia:
a spooning and thinning of the nail plate, indicates irona spooning and thinning of the nail plate, indicates iron
deficiency.deficiency.
2.Colour changes2.Colour changes::
-the ‘half-and-half’ nail, with a white proximal and red or-the ‘half-and-half’ nail, with a white proximal and red or
brown distal half, is seen in patients with chronic renalbrown distal half, is seen in patients with chronic renal
failure.failure.
-Whitening of the nail plates may be related to hypo--Whitening of the nail plates may be related to hypo-
albuminaemia, as in cirrhosis of the liver.albuminaemia, as in cirrhosis of the liver.
-Some drugs, notably antimalarials, antibiotics and-Some drugs, notably antimalarials, antibiotics and
phenothiazines, can discolor the nailsphenothiazines, can discolor the nails..
13.
14.
15.
16. 3.Beau’s lines:
transverse grooves which appear synchronously on all nails a
few weeks after an acute illness.
4.Connective tissue disorders:
nail fold telangiectasia orerythema is a useful physical sign in
dermatomyositis,systemic sclerosis and systemic lupus
erythematosus.
In dermatomyositis the cuticles become shaggy.
In systemic sclerosis loss of finger pulp leads to overcurvature
of the nail plates.
17.
18.
19. C. Nail changes in the common dermatoses:
1.Psoriasis
The best-known nail change are:
Pitting of the surface of the nail plate
Onycholysis
Discoloration
Splinter hemorrhage
Subangual hyperkeratosis
There is no effective treatment for psoriasis of the nails.
20.
21.
22.
23. 2.Eczema
Some patients with itchy chronic eczema bring their
nails to a high state of polish by scratching.
In addition, eczema of the nail folds may lead to a coarse
irregularity with transverse ridging of the adjacent
nail plates.
24.
25. 3.Lichen planus
Some 10% of patients with lichen planus have nail changes.
Most often this is a reversible thinning of the nail plate with
irregular longitudinal grooves and ridges.
More severe involvement may lead to pterygium in which the
cuticle grows forward over the base of the nail and attaches
itself to the nail plate
26.
27.
28. 4.Alopecia areata
The more severe the hair loss, the more likely there is
to be nail involvement.
A roughness or fine pitting is seen on the surface of the nail
plates and the lunulae may appear mottled.
29.
30. D. Infections:
1.Acute paronychia
The portal of entry for the organisms, usually staphylococci, is
a break in the skin or cuticle as a result of minor trauma.
There will be acute inflammation, often with the formation
of pus in the nail fold or under the nail.
Treatment is with flucloxacillin or erythromycin and
appropriate surgical drainage.
31.
32.
33. 2.Chronic paronychia
Cause
A mixture of pathogens (yeasts, Gram-positive cocci and
Gram-negative rods) colonize the space between the nail fold
and nail plate.
Predisposing factors include a poor peripheral circulation, wet
work, working with flour, diabetes, vaginal candidosis and
overvigorous cutting back of the cuticles.
Presentation and course
The nail folds become tender and swollen and small amounts
of pus are discharged at intervals. The cuticule is damaged and
the adjacent nail plate becomes ridged and discolored.
The condition may last for years.
34. Differential diagnosis
-amelanotic melanoma.
-dermatophyte infection.
Treatment
Manicuring of the cuticle should cease.
The hands should be kept as warm and dry.
The damaged nail folds packed several times a day with an
imidazole cream.
If there is no response, and swabs confirm that candida is
present, a 2-week course of itraconazole should be considered.
Treat gram negative rods and gram positive cocci.
35. 3.Dermatophyte infections
Cause
The common dermatophytes that cause tinea pedis
can also invade the nails include;
Trichophyton rubrum
Trichophyton mentagrophytes var.interdigitale
and Epidermophyton floccosum
36. Presentation
Toe nail infection is common and associated with tinea pedis.
The early changes occur at the free edge of the nail and spread
proximally.
The nail plate becomes yellow, crumbly and thickened.
Usually only a few nails are infected but occasionally all are.
The finger nails are involved less often and the changes, in
contrast to those of psoriasis, are usually confined to one hand.
37. Clinical course
The condition seldom clears spontaneously.
Differential diagnosis
Psoriasis.
Yeast infections of the nail plate, much more rare than dermatophyte
infections, can look similar.
Coexisting tinea pedis favours dermatophyte infection of the nail.
Investigations
Microscopic examination of a nail clipping.
Cultures should be carried out in a mycology laboratory.
38. Treatment
Local
imidazole preparations (e.g. miconazole and clotrimazole),
allylamines such as terbinafine,
benzoic acid ointment (Whitfield’s ointment),
and tolnaftate. They should be applied twice daily.
Topical nail preparations
Nail lacquer containing amorolfine. It should be applied once or twice a
week for 6 months,
Amorolfine and tioconazole nail solutions.
They can be used as adjuncts to systemic therapy.
Systemic rherapy
terbinafine, griseofulvin, itraconazole and fluconazole.
39.
40.
41. E. Tumours
1.Peri-ungual warts
Are common and stubborn.
Cryotherapy must be used carefully to avoid damage to
the nail matrix. It is painful but effective.
2.Peri-ungual fibromas
Arise from the nail folds, usually in late childhood, in patients
with tuberous sclerosis.
3.Glomus tumours
Can occur beneath the nail plate.
The small red or bluish lesions are exquisitely painful
if touched and when the temperature changes.
Treatment is surgical.
42. 4.Subungual exostoses
Protrude painfully under the nail plate.
Usually secondary to trauma to the terminal phalanx.
The bony abnormality can be seen on X-ray and treatment is
surgical.
5.Myxoid cysts
Occur on the proximal nail folds, usually of the fingers.
The smooth domed swelling contains a clear jelly-like material
that transilluminates well.
Cryotherapy, injections of triamcinolone and surgical excision
all have their advocates.
43. 6.Malignant melanoma
should be suspected in any subungual pigmented lesion,
particularly if the pigment spreads to the surrounding skin.
Subungual haematomas may cause confusion but ‘grow out’
with the nail.
The risk of misdiagnosis is highest with an amelanotic
melanoma, which may mimic chronic paronychia or a
pyogenic granuloma.
44.
45.
46.
47.
48.
49. F. Some other nail abnormalitie:
1.Pachyonychia congenita
Rare and inherited as an autosomal dominant trait.
The nails are grossly thickened, especially peripherally.
Hyperkeratosis may occur on areas of friction on the legs and
feet.
2.Nail–patella syndrome
Inherited as an autosomal dominant trait.
The thumbnails, and to a lesser extent those of the fingers, are
smaller than normal.
Rudimentary patellae, and renal disease complete the
syndrome.
50.
51.
52. 3.yellow nail syndrome
The nail changes begin in adult life, against a background of
hypoplasia of the lymphatic system.
Peripheral edema is usually present and pleural effusions may
occur.
The nails grow very slowly and become thickened and
greenish-yellow; their surface is smooth but they are
overcurved from side to side.
4.The nail ‘en racquette’
is a short broad nail usually a thumbnail, which is seen in
some 1–2% of the population and inherited as an autosomal
dominant trait.
The basic abnormality is shortness of the underlying terminal
phalanx.