Erectile dysfunction (ED) is the inability to get or keep an erection firm enough for sexual intercourse. It can be an occasional problem for some men, while it becomes a persistent issue for others. It can occur routinely with sex partners or during masturbation.

ED can significantly impact the quality of life for men and their partners. It is a common condition, particularly in older men, but can affect men of all ages. While occasional erectile dysfunction is not uncommon, frequent and persistent ED warrants medical evaluation.