A survey published in the Journal of the American Medical Association last year found 31 percent of men and 43 percent of women report some type of problem with sexual response. Psychological factors, such as stress, marital conflict, or depression may also cause it. Ejaculation disorders fall into several categories. Premature ejaculation occurs before or soon after penetration. In retrograde ejaculation the seminal fluid is forced back into the bladder.
Inhibited ejaculation is the inability to have ejaculation.
Lack of sexual desire or arousal can have medical or psychological roots. Stress, fatigue, anxiety, prior traumatic sexual trauma, or relationship problems can contribute to sexual dysfunction. Painful intercourse can be caused by physical or psychological factors. Pelvic surgery, infections, or loss of vaginal lubrication can irritate the tissues and lead to pain during intercourse. In a condition called vaginismus, the woman experiences involuntary spasm or tightening of the muscles at the entrance of the vagina.