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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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How to differentiate between psychological and organic erectile dysfunction -
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The correct answer is  Ans. is 'a' i.e.. Nocturnal penile tumescence o One of the important method to distinguish psychogenic impotence from organic impotence is nocturnal penile tumsescence & early morning erection which are preserved in psychogenic impotence but not in organic cause of impotence.