In premature ejaculation, a man has an orgasm and ejaculates earlier during intercourse than he would like. It often happens very early during intercourse, with little stimulation. It can be a frustrating experience for both sexual partners.
Premature ejaculation is the one of the most common sexual condition affecting men under the age of 40. It is said to affect about one in five men between the ages of 18 to 59. It is also likely that premature ejaculation will affect most men during some point in their life.