Sometimes premature ejaculation occurs because of biological issues, and sometimes it occurs due to psychological issues. A combination of psychological and biological conditions can cause it too.
Biologically, premature ejaculation can be caused by abnormalities in hormonal levels, imbalances in the brain’s neurotransmitters, or problems with the prostate or urethra (such as inflammation or infection). Somewhat paradoxically, erectile dysfunction can be a cause of premature ejaculation due to psychological anxiety about maintaining an erection, followed by rushing to ejaculate.
Premature ejaculation may result from psychological problems, including those that arise from sexual experiences at a young age, or sexual abuse.
Sometimes poor body image can contribute to premature ejaculation, as can depression. Guilt, including religious guilt, can cause a man to inadvertently rush through sexual activity. And finally, worrying about premature ejaculation can become a self-fulfilling prophecy that feeds on itself.