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 positive Nikolsky sign (epidermal peeling with lateral pressure) is classically seen in: A) Bullous pemphigoid B) Pemphigus vulgaris C) Psoriasis D) Lichen planus dermatology mcq pdf
A patient on carbamazepine develops fever, facial edema, widespread dusky red macules with target lesions and mucosal erosions. Diagnosis: A) Urticaria B) Erythema multiforme major C) Stevens-Johnson syndrome D) Fixed drug eruption A 70-year-old man has tense bullae on the
A 40-year-old woman has multiple painful, erythematous nodules on the shins, along with fever and arthralgias after a streptococcal throat infection. Most likely: A) Erythema migrans B) Erythema nodosum C) Erythema multiforme D) Erythema marginatum Diagnosis: A) Urticaria B) Erythema multiforme major C)
Which of the following is a histological hallmark of psoriasis? A) Acantholysis B) Spongiosis C) Munro microabscesses D) Civatte bodies
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
Neutrophilic microabscesses in stratum corneum. Acantholysis = pemphigus; Spongiosis = eczema; Civatte bodies = lichen planus.