A persistent or recurrent failure to reach or maintain a complete erection.
Impotence is a common sexual complaint of men predominantly the secondary form.
It is not a natural consequence of aging. Any illness may cause impotence temporarily but particularly chronic debilitating disease, chronic renal disease, peripheral vascular disease, and local physical and neurological disorders. First identify any physical causes and treat. Follow with global therapy, if needed. Therapy includes allowing the female to play the dominant role and insisting on a gradual shift from foreplay to intercourse.