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Neutrophilic microabscesses in stratum corneum. Acantholysis = pemphigus; Spongiosis = eczema; Civatte bodies = lichen planus.
Koilonychia (spoon nails) is classically associated with chronic iron deficiency. Also seen in Plummer-Vinson syndrome. dermatology mcq pdf
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 Neutrophilic microabscesses in stratum corneum
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. Also seen in Plummer-Vinson syndrome
A 45-year-old woman has malar erythema, flushing, and telangiectasias. She denies comedones. She also reports ocular irritation. Most likely diagnosis: A) Acne vulgaris B) Rosacea C) Lupus erythematosus D) Seborrheic dermatitis
A 70-year-old man has tense bullae on the trunk and proximal limbs, with no mucosal lesions. Direct immunofluorescence shows linear IgG along the basement membrane. Diagnosis: A) Pemphigus vulgaris B) Bullous pemphigoid C) Dermatitis herpetiformis D) Epidermolysis bullosa acquisita
A 30-year-old woman develops well-defined hypopigmented macules on the face, with fine scale. Wood’s lamp shows yellow-green fluorescence . Likely diagnosis: A) Vitiligo B) Pityriasis alba C) Tinea versicolor D) Leprosy