Premature ejaculation is essentially a self-defining term. It’s the inability to delay ejaculation for more than one minute after sexual penetration, but it can occur with other types of sexual activity, including masturbation. There are two basic types of premature ejaculation: primary and acquired.
Though it’s not something most men discuss openly, you can rest assured that premature ejaculation is a very common problem.
Primary premature ejaculation is diagnosed when it has happened to a man from the time of his very first sexual experiences, and has persisted. Acquired premature ejaculation occurs after having had sexual encounters in which premature ejaculation wasn’t a problem. It’s important for men to understand that the average time from the beginning of sexual intercourse to ejaculation is about five minutes.