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
[{'content': 'Tense itching bulla is seen in ? \nSelect and explain. \nA. Bullous pemphigoid, B. Dermatitis herpetiformis, C. Pemphigous vulgaris, D. Erythema multiforme', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Bullous pemphigoid", 'role': 'assistant'}]