This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Sexual Offenses, Subject name: Forensic Medicine
Most important cause of impotence: 
Select and explain. 
A. Male factor, B. Female factor, C. Psychogenic, D. Anatomical
C: Psychogenic
Answer: C: Psychogenic 
Explanation: Ans. (c) PsychogenicRef: The Essentials ofFSM by K.S. Narayan Reddy 31st ed. / 356-58* Impotence is inability to perform sexual acticity.* It is applied to male only* Most important cause of impotence is: Psychogenic* Vpsychogenic cause is ruled out then male factor should be tested next* NOTE: FRIGIDITY: impotency which is seen in females