This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Vestibulobullous disorders, Subject name: Dental
Fishy net pattern is seen in 
Select and explain. 
A. Pemphigus vulgaris, B. Dariers disease, C. Bullous pemphigoid, D. Dermatitis herpetiformis
A: Pemphigus vulgaris
Answer: A: Pemphigus vulgaris 
Explanation: In Direct immunofluorescence of skin biopsy specimen intercellular IgG -fishnet pattern throughout the epidermis is seen in pemphigus vulgaris Linear IgG and C3 at basement membrane zone is seen in bullous pemphigoid. Granular IgA at basement membrane zone and tips of dermal papillae is seen in Dermatitis herpetiformis IADVL's concise textbook of dermatology page 1073