Causes of Blood in Ejaculate

Blood in the ejaculate—also known as hematospermia—is a condition that affects many men. The semen may appear entirely light red, partially light red, or coffee-colored—all indicative of blood presence. Normally, semen should not contain any blood components. So, what causes hematospermia? Below, we address this question.

Causes of Hematospermia

1. Seminal Vesiculitis

Seminal vesiculitis can cause yellowish semen and hematospermia. Secretions from the seminal vesicles constitute one of the major components of semen. Because the wall of the seminal vesicle is thin, inflammation and subsequent congestion readily lead to bleeding from its highly vascularized wall. Blood from the inflamed seminal vesicle mixes with its secretions, resulting in blood-tinged semen upon ejaculation.

2. Prostatitis

Prostatitis may also cause yellowish semen and hematospermia. The underlying mechanism is similar to that of seminal vesiculitis: prostatic fluid constitutes another key component of semen, and inflammatory congestion and exudation within the prostate gland can lead to bleeding. Due to their close anatomical proximity, the seminal vesicles and prostate are frequently involved simultaneously during inflammation—thus, seminal vesiculitis commonly coexists with chronic prostatitis.

3. Ruptured Blood Vessels

Occasional hematospermia without identifiable abnormalities on clinical examination may result from minor trauma during sexual intercourse—such as rapid engorgement and mechanical impact causing microvascular rupture in the genital organs. In such cases, there is typically no need for excessive concern; abstaining from sexual activity usually leads to spontaneous resolution within approximately two weeks.

4. Genitourinary Tumors

Rarely, hematospermia may stem from malignancies of the genitourinary system—for example, cancer of the seminal vesicles or prostate. Surface vessels of such tumors may rupture and bleed, with blood subsequently appearing in the ejaculate. Other uncommon causes include coagulation disorders—such as deficiencies or reduced levels of clotting factors—which may predispose individuals to bleeding within the genitourinary tract.

The above outlines the primary causes of hematospermia. We hope this information proves helpful.