Premature ejaculation is a common male sexual dysfunction. Approximately 20-30 percent of men will have premature ejaculation, according to MedicineNet.com. Ejaculation problems involve the improper discharge of sperm, prostatic and seminal vesicle fluid through the urethra.
In some cases, premature ejaculation is caused by psychological factors, including a strict religious background that causes the person to view sex as sinful, a lack of attraction for a partner, and past traumatic events.
Premature ejaculation can often be due to performance anxiety during sex. However, organic causes are sometimes present. Certain medication such as some antidepressants may impair ejaculation. Nerve damage to the spinal cord or back can also cause premature ejaculation.
Disordered orgasm is the inability to reach an orgasm after adequate stimulation. The causes behind disordered orgasm may include psychiatric disorder, diabetic neuropathy, multiple sclerosis, complications from genital surgery, pelvic trauma and drugs (alpha-blockers, antidepressants).
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Reviewed May 2, 2014