Premature ejaculation can have causes that aren’t due to underlying disease. Examples include individual variation or sexual inexperience.
Premature ejaculation occurs when a man ejaculates sooner during sexual intercourse than he or his partner would like. Premature ejaculation is a common sexual complaint. Estimates vary, but as many as 1 out of 3 men say they experience this problem at some time. Premature ejaculation (PE) is when you have an orgasm before intercourse or less than a minute after you start. There is no set time when a man should ejaculate during sex, but if you ejaculate and lose your erection this soon, you and your partner may feel there’s not enough time to enjoy it.
A study involving 500 couples found the average time for ejaculation was about 5-and-a-half minutes after starting sex. This time could be longer for men who have sex with men. International guidelines define premature ejaculation as regularly ejaculating within 1 minute of entering your partner. However, it’s up to you and your partner to decide if you’re happy with the time it takes you to ejaculate.