Haemospermia (blood in the semen)

The discovery of blood in your semen often causes a lot of alarm, but thankfully there is usually no serious cause, particularly in young men.

In at least half the cases of haemospermia, the cause is never identified. The cause is most likely to be forgotten or unnoticed trauma to the testes or the perineum. The perineum is the area between the anus and the testicles.

Other common causes are

  • prostatitis (inflammation/infection of the prostate gland)
  • other genitourinary infection
  • Men under the age of 40 are very unlikely to have any serious underlying cause. Men over the age of 40, with more than one episode should be investigated.
Other possible causes include
  • abnormalities of the blood clotting mechanism
  • stones in the prostate gland
  • cancer of the prostate, testicles, or bladder TB
  • Schistosomiasis
Common investigations
  • Examination of the urine for infection, red blood cells
  • Swabs from the urethra to exclude infection.

Further information

This article published on
28 November 2005

Next review date 11/1/2013


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