Blood in semen… What causes blood in semen?
Blood in ejaculated semen (hemospermia) is relatively uncommon and rarely serious. In most cases, the cause can’t be determined, and the problem goes away without treatment. However, known causes of blood in semen include inflammation, infection and blockage or injury to the prostate gland or seminal vesicles. Also, following a prostate biopsy, it is common to have blood-tinged semen for four or five subsequent ejaculations.