This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Pemphigoid Group, Subject name: Skin
Intra epidermal Bulla is seen in : 
Select and explain. 
A. Pemphigoid, B. Pemphigus, C. Dermatitis Herpetiformis, D. Light reaction
B: Pemphigus
Answer: B: Pemphigus 
Explanation: Ans. is 'b' Pemphigus "Pemphigus causes intraepidermal blistering because of loosening of desm somal links b/w epidermal cells caused by immunological attack- Roxburg, 16/e