Correct Answer - D
Ans. D. Chronic sun damage plays a role
Bowen's Disease
Bowen's disease is SCC in situ.
More common in fair skinned people.
More common on sun exposed areas such as head & neck followed
by limbs.
When arises on glans penis, it is called "erythroplasia of Queytat."
Correct Answer - D
Ans. D. Long term oral steroids
Drugs used in scabies
1. Topical: Permethrin (drug of choice), GBH/BHC, benzyl - benzoate,
crotamine, malathion.
2. Oral: Ivermectin.
3. For pruritis :Antihistaminics
Correct Answer - D
Ans. D. Extensor aspect of upper extrimities
Sites of involvement in lichen planus
Flexors aspect of upper extremities and legs are the most common
site involved.
Oral mucosa involvement may lead to lacy pattern of lesions
Nail involvement may cause pterygium (most characteristic),
onychorrhexia, nail atrophy, anychia.
Hair involvement cause scaring alopecia
Inverse lichen planus affects axillae, groin, infraaxillary areas.
Correct Answer - D
Ans. D. Usually improves with age
Piebaldism
Piebaldism is a rare autosomal dominant condition characterized by
stable areas of vitiligo-like amelanotic skin associated with a white
forelock.
Present at birth and usually remain unchanged throughout life.
Most common is a frontal median or paramedian patch, associated
with a mesh of white hair (white Forelock).
Often, white patches occur on the upper chest, abdomen and limbs,
bilaterally but not necessarily symmetrically
The hands and feet, as well as the back, remain normally pigmented
Islands of normal or hypermelanotic skin occur in the white areas, or
less often on normal skin.
Correct Answer - C
Ans. is 'c' i.e., Permethrin
'Premethrin is the drug of choice for infants as well as pregnant and
nursing women'. — Evidence based dermatology
Alternatives are benzyl-benzoate and crotamitone.
Gamma benzen hexachloride and ivermectin are not recommended.
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Correct Answer - A
Sutton's nevus/halo's nevus : a halo of depigmentation appears around a
preexisting melanocytic naevus.
Meyerson’s naevus is used to describe a melanocytic naevus that has developed an
associated inflammatory reaction, which looks like eczema.
Ref: Rook's textbook of dermatology, 8th edition Pg 54.20.
Post-COVID Hair Loss in a Female
> Clinical scenario:
Hair loss since 1 month
H/O COVID infection 8 weeks ago
Diffuse thinning, no patchy hair loss
Images show general scalp thinning
> Correct Answer: a. Telogen effluvium ✅
This is a classic presentation of telogen effluvium:
Occurs 6–12 weeks after a stressful event (like COVID, surgery, childbirth)
Characterized by diffuse non-scarring hair shedding
Hair enters telogen (resting) phase prematurely
Correct Answer -A
A i.e The phase of activity & growth
Correct Answer-C
Pemphigus vulgaris is an intraepidermal blistering disease.
Correct Answer - B
Ans. B. Oligoarticular
Psoriatic arthritis (Affects 5-1Och of psoriatic patients)
Classic or polyarticular type (16%):- affects DIP joints with “sausage
shape apearance"of fingers
and toes. Nail involvement is common.
Monoarticular or oligoarticular type (70%) most common type,
affects large joints like knee.
Rheumatoid type (15%) :- RA like presentation. Symmetrical.
Affects PIP joints leading to "swan neck deformity."
Axial type or spondylitis :- associated with HLA - B27.
Correct Answer - D
Ans. D. Erythromycin
Buboes are most commonly caused by LGV.
Doxycycline/tetracycline is the drug of choice for LGV in a non-
pregnant female.
In a pregnant female and children below 8 years, it should be treated
with erythromycin.
Correct Answer - B
Ans. B.Heart
Incontinentia pigmenti (also k/a Bloch-Sulzberger syndrome) is
a X-linked dominant genetic disorder. It involves
Skin (100% of affected people)
Teeth (80-90 % of affectedpeople)
Bones (30-40% of affected people)
CNS i.e. brain & spinal cord (30-40% of affected people)
Eyes (25-35% of affected people)
Correct Answer - D
Ans. D. Becker nevus
Becker nevus is appendageal nevi where as other three are
melanocyitc nevi.
Melanocytic nevi are :-
Dysplastic nevus
BIue nevus
Nevus of ito & nevus of ota
Spitz nevus
Giant pigmented nevus
Mongolian spot
Intramucosal neyus
Correct Answer - C
Ans. is 'c' i.e., Testosterone
Predisposing factors for Acne vulgaris
Genetic factors
Hormones -4 Androgens, glucocorticoids.
Psychological stress and depression.
Environmental factors High temperature & humidity.
Cosmetics -3 Containing lenolin, petroleum, vegetable oils.
Infection --> Propionibacterium, Pityrosporum, Staph. epidermidis.
Menstural cycle -4 Premenstural aggravation.
Hyperkeratosis of pilosebaceous ostia.
Drugs Antepileptics (Carbamazepine, phenytoin, phenobarbitone),
antitubercular (INH, rifampin, ethionamide), antidepressants,
cyclosporine, Vitamin B12
.Cough syrups containing halogens
(Iodides, bromides
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Correct Answer - D
Ans. is 'd' i.e., Crohns disease
Vitiligo is associated with the following autoimmune diseases :-
Alopecia areata
Diabetes mellitus
Hyperthyroidism
Hypothyroidism
Pernicious anemia
Addison disease
Multiple endocrinopathy syndrome
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Correct Answer-D
The lines of Blaschko are defined by a pattern determined by nevoid
representing non random lines on the human skin or mucosa
Blaschko lines or the lines of Blaschko are thought to represent
pathways of epidermal cell migration and proliferation during the
development of the fetus.
Lines of Blaschko represent non-random developmental lines of the
skin fundamentally differing from the system of
dermatomes. They follow a'V' shape over the back, 'S' shaped
whorls over the chest, stomach, and sides, and wary shapes on the
head. The lines are belived to trace the migration of embryonic
epidermal cells. The stripes are a type of genetic mosaicism
These lines characteristically do not follow the underlying nervous
Vascular, muscular or lymplatic structures in the
skin. Lines of Blaschko are not ordinarily visibk, but are recognized
in several cutaneous disorders that follow these arallel streaks.
Ref: Syndromes: Rapid recognition and perioperative implications,
by Bruno Bisonnette, Page 400; Neurocutaneous disorders:
Phakomatosis and Hamartoneoplastic Syndromes, by Martino
Ruggieri. Page 364.
Correct Answer-D
Ans. D. i.e. Tzanck smear from the floor of bulla
Correct Answer-D
Pulsed dye Laser REF: Roxburgh's common Skin Diseases 17th
edition page 194 & 205, Clinical Dermatology by John Hunter, John
Savin & Mark Dahl 3' edition page 275
"Selective Photothermolysis or Pulsed dye laser is the treatment of
choice for Portwine hemangioma"
Port-wine stains are crimson blotches in which there is marked
capillary dilatation compared to a capillary angioma, which is a red
nodule or plaque containing proliferating endothelial cells. The latter
tend to flatten and disappear at puberty. Larger ones may cause
problems from bleeding and/or erosion. Cavernous haemangiomata
are larger and compressible, containing large vascular spaces
Occasionally a port-wine stain of the trigeminal area is associated
with a vascular malformation of the leptomeninges on the same side
which may cause epilepsy or hemiparesis (the SturgeWeber
syndrome), or with glaucoma.
Excellent results have been obtained with careful and time-
consuming treatment with a 585-nm flashlamp-pumped pulsed dye
laser. Treatment sessions can begin in babies and anaesthesia is
not always necessary. If a trial patch is satisfactory, 40-50 pulses
can be delivered in a session and the procedure can be repeated at
3-monthly intervals.
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