Psoralane Ultra Violet A (PUVA) therapy is advised in: (A) Pemphigus vulgaris, (B) Apthous ulcers, (C) Carcinoma in situ, (D) ANUG
Answer is A. According to Rook and Colleagues the extra corporeal photochernotherapy for drug resistant pemphigus vulgaris include administration of 8-methoxypsoralen followed by exposure of peripheral blood to ultraviolet radiation. It is also used for vitiligo and graft versus host disease.