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Blood in semen
Category: Men's Health · All men's health symptoms
What it can feel like
Blood in semen (haematospermia) means semen that appears pink, red or brown. It is alarming to see but most often benign and self-limiting — a small blood vessel rupturing in the prostate or seminal vesicles, similar to a nosebleed. Age and persistence change the calculus: recurrent episodes over 40 are investigated properly.
Possible causes
A symptom can have many causes, and most are not serious. The lists below group conditions this symptom can be associated with — common causes first. They are possibilities to discuss with a clinician, not a diagnosis.
Common causes
Blood in semen can be associated with vigorous or prolonged sexual activity or a long gap before it, prostate or seminal vesicle inflammation (prostatitis), urinary or sexually transmitted infection, and recent prostate procedures or biopsy (an expected, settling effect).
Other possible causes
Persistent blood in semen can also be associated with prostate enlargement, stones or cysts in the ejaculatory ducts, high blood pressure effects, bleeding disorders or blood-thinner medicines, and rarely prostate cancer — the reason persistence after 40 leads to urology review.
Red flags — when to seek help promptly
- Blood in semen persisting beyond a few weeks or recurring repeatedly, especially over 40
- Blood in semen with blood in the urine, difficulty passing urine or urinary retention
- Blood in semen with testicular pain, a testicular lump, or pelvic pain and fever
- Blood in semen with unexplained weight loss or bone pain
What a clinician may do
A clinician will ask about pattern, urinary symptoms, sexual history and medicines, examine the prostate, test urine, and arrange STI swabs and a PSA discussion where age and pattern warrant. Persistent cases go to urology for imaging of the prostate and seminal vesicles.
Related guides on MedicalVideos.com
Frequently asked questions
Why does age 40 change the approach?
Prostate cancer before 40 is rare; after 40 it enters the differential for persistent haematospermia. A single episode in a younger man is usually observed; persistence at any age, or any episode pattern over 40, earns the examination-and-tests pathway.
Can a prostate biopsy cause it for weeks?
Yes — blood in semen (and urine) after prostate biopsy is expected and can take several weeks and many ejaculations to clear fully, typically fading from red to brown. It is reported to the team only if it worsens, continues far beyond the expected window, or joins fever or retention.
Related symptoms — Men's Health
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