I talk to men and women about this problem almost daily. Lots of good advice up there. Also, damage to nerves in the groin area, or chronic pain which affects the legs can contribute in some male's cases. I would say most cases of erectile dysfunction are a combination of emotional and psychological and physical factors.

I've even heard of indivdiuals with extreme touch sensitivity such as those with autistic features having trouble with being pursued. These individuals do better when they can control the touch. Naturally each situation is different and finding causes requires diagnostic skills which one might find in a well-trained sex therapist, urologist, family practitioner, or other mental health provider. Asking the right questions about the problem is very important in determining causality, imo.