Hello and welcome to Healthcaremagic.com. Blood in your semen (hematospermia) can be caused by tumors, infections, anatomical abnormalities, stones, or inflammation in many sites throughout the genitourinary system. Usually blood in the semen is benign and resolves on its own. Blood in semen can be caused by many conditions affecting the male genitourinary system. Areas affected may include the bladder, urethra, the testicles, the tubes that distribute semen from the testicles (known as the seminal vesicles), the epididymis (a segment of the spermatic ducts that serves to store, mature, and transport sperm), and the prostate gland. The following conditions have been reported in association with hematospermia: - Benign or malignant tumors of the prostate, bladder, testes, or seminal vesicles - Infections including, but not limited to, chlamydia, herpes, cytomegalovirus, and trichomoniasis - Inflammation of the prostate (prostatitis), epididymis (epididymitis), or urethra (urethritis) - Calculi (stones similar to kidney stones) in the seminal vesicles or prostate - Polyps in the urethra - Ejaculation duct obstructions - Metastatic cancers (that have spread from other sites in the body) in the genitourinary system - Cysts, hemorrhage, or other abnormalities in the seminal vesicles In your case, the likelihood of contracting a sexually transmitted disease is the predominant cause of your problem. It is important that you visit your family physician to determine the cause of your hematospermia. If an infection is determined to be the cause, early treatment is essential. Be well, Dr. Kimberly