This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Skin
Granular deposit of IgA at dermoepidermal junction is seen in ? 
Select and explain. 
A. Pemphigus vulgaris, B. Bullous pemphigoid, C. Dermatitis herpatiformis, D. Pemphigus foliaceous
C: Dermatitis herpatiformis
Answer: C: Dermatitis herpatiformis 
Explanation: Ans. is 'c' i.e., Dermatitis herpatiformis Immunopathological appearance of vesicobullous disorders Bullous pemphigoid - Linear band of IgG or C3 in epidermal basement membrane Pcmphigus vulgaris - Cell surface deposits of IgG on keratinocytes Pemphigus foliaceous - Cell surface deposits of IgG on keratinocytes --> Pemphigoid gestationis - Linear band of C3 in epidermal basement membrane zone Dermatitis herpeteformis - Granular deposits of IgA in dermal papillae --> Chronic bullous disease of childhood - IgA deposits along the dermoepidermal junction Linear IgA dermatosis of adults - Linear deposits of IgA at dermoepidermal junction