Educational information only, not a diagnosis. Know when to get help.
For most men, no treatment is needed. NHS advice is that blood in semen usually doesn't need treatment and often goes away by itself in a few days or weeks [NHS]. When a cause is found, treatment is aimed at the cause [review].
If no cause is found
Reassurance and watchful waiting is the standard approach when examination and tests are normal [AAFP] [NICE]. In one prospective study cited in a 2017 review, hematospermia without infection, inflammation or cancer resolved on its own in more than 88% of patients, with an average duration of about 1.5 months [review].
Treating the cause
| Cause | Typical approach |
|---|---|
| Urinary or sexually transmitted infection | Antibiotics. Sexual partners may also need testing and treatment [NHS] [NHS chlamydia]. |
| Prostatitis | Antibiotics. Chronic prostatitis may need specialist care [NHS]. |
| After a procedure | Usually just time. Expect it to resolve within about 3–4 weeks [NICE]. |
| High blood pressure or a bleeding problem | Managing the underlying condition [NICE]. |
| Cysts, stones or obstruction | Sometimes a minor urological procedure [review]. |
| Cancer (rare) | Treatment of the cancer itself, managed by specialists [review]. |
Some clinicians prescribe antibiotics "just in case" for presumed prostatitis, but reviews describe this as controversial, because improvement may simply be the natural course [review]. Don't take leftover antibiotics. Get tested so treatment matches the cause.

Self-care while it settles
- Use condoms until infection has been ruled out.
- Don't stop prescribed blood thinners without speaking to the prescriber.
- Keep a short note of each episode to show your doctor.
- Return if it's still happening after 3–4 weeks, or sooner if new symptoms appear [Mayo].
Sources
- Blood in semen NHS, reviewed Sep 2025
- Hematospermia: etiology, diagnosis, and treatment Review article, PubMed Central (PMC5904639)
- Evaluation and Treatment of Hematospermia American Family Physician, 2009;80(12):1421-1427
- Haematospermia: management NICE Clinical Knowledge Summaries
- Etiologic classification, evaluation, and management of hematospermia Translational Andrology and Urology review, PubMed Central (PMC5673809)
- Chlamydia NHS
- Prostatitis NHS, reviewed Feb 2024
- Laboratory and clinical management of leukocytospermia and hematospermia: a review PubMed Central (PMC7290265)
- Blood in semen: when to see a doctor Mayo Clinic
We link to primary medical sources so you can check our work. See the editorial policy and the full reference list.
