The most common cause of erectile dysfunction is damage to the nerves, arteries, smooth muscles, or fibrous tissue; the cause of erectile dysfunction, however, could be anything that disrupts the sequence of events leading to an erection. Lifestyle choices, surgery, medications, and psychological factors can also be a cause of erectile dysfunction.
(Click Cause of Erectile Dysfunction for more information about how injuries, lifestyle choices, and psychological factors, among other things, can cause erectile dysfunction.)