Linear IgA Bullous Dermatosis — MCQs

A 60-year-old female presents with eczematous itching lesions. Biopsy revealed a subepidermal cleft with Direct Immunofluorescence showing Linear C3 & IgG deposition along the basement membrane zone. What is the likely diagnosis?

A skin biopsy shows acantholysis with intraepidermal blistering. Which immunofluorescence pattern would confirm pemphigus vulgaris?

A 58-year-old woman had a mitral valve replacement, and was placed on anticoagulants and prophylactic antibiotics following her surgery. Five days after her surgery, she developed a sharply demarcated, erythematous rash on her left thigh. Two days after the rash appeared, large hemorrhagic bullae began to form in the area of the rash. Which of the following medications most likely caused the patient's rash?

A 40-year-old male developed persistent oral ulcers, followed by multiple flaccid bullae on the trunk and extremities. Direct immunofluorescence examination of a skin biopsy showed intercellular IgG deposits in the epidermis. What is the most probable diagnosis?

A child presented with itchy plaques over the neck, the bilateral popliteal and cubital fossa. What could be the diagnosis?

A patient presents with skin lesions and erosions on the buccal mucosa. The immunofluorescence image is shown. What is the most likely diagnosis?

Identify the diagnosis based on the dermatology immunofluorescence (IF) image provided.

The following lesion appears on the leg of a patient of ulcerative colitis. All are useful in management except:

A newborn presents with a skin lesion as shown. The infant is feeding normally, has no fever, hypotension, or shock signs. Which diagnosis is most likely?

Match each clinical sign in Column A with its corresponding dermatological condition in Column B: Column A (Clinical Sign) Column B (Condition) Positive Nikolsky sign Pemphigus vulgaris Pseudo-Nikolsky sign Stevens-Johnson syndrome False Nikolsky sign Bullous pemphigoid Cerebriform tongue Pemphigus vegetans Which of the following is the correct match?