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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
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Psoralen-A is used in the treatment of:
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The correct answer is  Photochemotherapy (PUVA: Psoralen ultraviolet A)- Photoactivated psoralen undergoes 02 independent as well as 02 dependent reactions and binds to pyrimidine bases- interferes with DNA synthesis and epithelial cell turnover. Oral methoxsalen is followed 1-2 hours later by UVA exposure on alternate days. ESSENTIALS of medical PHARMACOLOGY SEVENTH EDITION-KD TRIPATHI page:892