Impotence, or erectile dysfunction, is when a man is unable to obtain or maintain an erection adequate for sexual intercourse satisfactory to himself or his partner. There are many physical and psychological causes for erectile dysfunction, so it is important to be evaluated by a doctor if the problem is recurrent.
If impotence is a symptom of an untreated reversible problem like hormone imbalance, correcting the underlying problem may correct the dysfunction. Impotence can be treated with oral or injected medications or with suppositories. In severe cases,external penis pumps or surgical intervention with penile implants are an option.