Medically reviewed by Matthew Wosnitzer, MD Erectile dysfunction (ED) is an inability to achieve or maintain an erection ...

Erectile dysfunction makes it hard for men to get or keep an erection firm enough for sex. Learn how common ED is, the age group it affects most, and what might help treat it.

Most men once you hit age 50 have at least some experiences where erections are not what they should be. Either you didn't get a good erection, or premature ejaculation, or fading too quickly ...