Neutrophilic microabscesses in stratum corneum. Acantholysis = pemphigus; Spongiosis = eczema; Civatte bodies = lichen planus.
A child has intensely pruritic vesicles on the flexural aspects of elbows and knees, with personal/family history of asthma and hay fever. Most likely diagnosis: A) Contact dermatitis B) Atopic dermatitis C) Scabies D) Dermatitis herpetiformis dermatology mcq pdf
A patient with fair skin has a new 6 mm pigmented lesion with irregular borders, variegated color, and recent change. Best next step: A) Topical 5-FU B) Shave biopsy C) Excisional biopsy with 1-2 mm margins D) Observation for 3 months Neutrophilic microabscesses in stratum corneum
A patient presents with sudden onset of diffuse erythroderma (>90% body surface area redness and scaling), with chills and tachycardia. This is most commonly a complication of: A) Atopic dermatitis B) Psoriasis C) Contact dermatitis D) Scabies Most likely diagnosis: A) Contact dermatitis B) Atopic
A patient presents with violaceous, polygonal, pruritic papules on the wrists. Histology shows saw-tooth rete ridges and band-like lymphocytic infiltrate. Diagnosis: A) Psoriasis B) Lichen planus C) Discoid lupus D) Scabies
A 25-year-old presents with annular, scaly plaque with central clearing and active border on the thigh. KOH mount shows hyaline septate hyphae. Best treatment: A) Topical clotrimazole B) Oral fluconazole C) Oral terbinafine D) Topical mupirocin
Only Microsporum species (M. canis, M. audouinii) fluoresce bright blue-green. Trichophyton species do not fluoresce. 6. Recommended Resources for Further Study | Resource | Type | |----------|------| | Andrews’ Diseases of the Skin | Textbook | | Fitzpatrick’s Color Atlas | Atlas | | Dermatology DDx Deck (Usatine) | Flashcards | | First Aid for the USMLE (Derm chapter) | Review | | Free online question banks | Qbank | End of PDF sample – 20 MCQs. To generate additional sets (100, 500, or specialty topics), contact or use a question generator.