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': 'Flaccid bullae with mucosal involvement and intraepidermal acantholysis are characteristic of? \nSelect and explain. \nA. Pemphygus vulgaris, B. Pemphigus foliaceous, C. Psoriasis, D. Vitiligo', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Pemphygus vulgaris Among the given options, two are vesicullabullous disorders :- Pemphigus vulgaris Pemphigus foliaceous Both of these cause flaccid bullae with intraepidermal blisters. but, mucosal involvement is common in pemphigus vulgaris (not in P foliaceous).", 'role': 'assistant'}]