One of the main causes of delayed ejaculation is adaptation to a certain masturbatory technique. The sensations a man feels when masturbating may bear little resemblance to the sensations he experiences during intercourse. Factors such as pressure, angle and grip during masturbation can make for an experience so different from sex with a partner that the ability to ejaculate is reduced or eliminated.
Physical causes of delayed ejaculation may imply some diseases and conditions which affect a man's ability to achieve orgasm. These include many neurological (for example stroke or damage to the back or spinal cord) and endocrine diseases (diabetes), prostate problems, some allergies and high blood pressure. As well difficulty in achieving orgasm can result from pelvic surgery that involved trauma to pelvic nerves which are responsible for orgasm. Some men report a lack of sensation in the nerves of the glans penis, which may or may not be related to external factors, including a history of circumcision.
Delayed ejaculation might be a side effect of some medications, usually of some antidepressants. Ejaculation will also take longer if the man has recently ejaculated. Another reason for delayed ejaculation is excessive use of alcohol. In this case physical and psychological causes might co-exist.
