Blood in the Semen
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Try one of these related symptoms.
Blood in urine
Lower abdominal pain
Gross hematuria
Pain during sex
Painful ejaculation
Blood in semen after sex
Blood in semen but not urine
Blood when peeing
Swelling of scrotum
Blood when i ejaculate
About the Symptom
Semen is found in ejaculate, which is usually a cloudy milky color discharged from the penis during orgasm (ie: ejaculation). The presence of blood in semen (hematospermia) is clear visible as ejaculate becomes a blood-stained color.
Possible Causes
Generally, Blood in the semen can be related to:
- Hematospermia
Hematospermia is the presence of bloody or blood-tinged semen. It is commonly seen after prostate biopsy (lasts for 3-4 weeks), radiation treatment for prostate cancer, genital and urinary cancers, infections, trauma, and systemic diseases.
- Bladder Cancer / Ureteric Cancer / Renal Pelvis Cancer
Cancer of the walls of the urinary system. Risk factors include smoking, age, and exposure to certain chemicals. in addition people over 55, people who have been treated for cancer in the past with certain chemotherapies or radiation to the area are also at higher risk. Symptoms depends on location of the tumor but blood in the urine -- whether seen by the naked eye or seen under the microscope -- is the most common symptom. Painful or frequent urination or flank pain can also be warning signs.
- Prostate Cancer
Prostate cancer starts in the cells of the prostate which is a gland in the male reproductive system. Men are usually diagnosed by a blood test called the PSA (Prostate Specific Antigen). When it reaches a certain value, men are usually referred to a urologist for evaluation.
Doctor's Diagnostic Questions
Your doctor may ask these questions to check for this symptom:
- Have you ever had red or bloody semen?
- Have you experienced blood in the semen before?
- How long have you had blood in the semen this time?
Reviewed By:
Kenji Taylor, MD, MSc (Family Medicine, Primary Care)
Dr. Taylor is a Japanese-African American physician who grew up and was educated in the United States but spent a considerable amount of time in Japan as a college student, working professional and now father of three. After graduating from Brown, he worked in finance first before attending medical school at Penn. He then completed a fellowship with the Centers for Disease Control before going on to specialize in Family and Community Medicine at the University of California, San Francisco (UCSF) where he was also a chief resident. After a faculty position at Stanford, he moved with his family to Japan where he continues to see families on a military base outside of Tokyo, teach Japanese residents and serve remotely as a medical director for Roots Community Health Center. He also enjoys editing and writing podcast summaries for Hippo Education.
Yoshinori Abe, MD (Internal Medicine)
Dr. Abe graduated from The University of Tokyo School of Medicine in 2015. He completed his residency at the Tokyo Metropolitan Health and Longevity Medical Center. He co-founded Ubie, Inc. in May 2017, where he currently serves as CEO & product owner at Ubie. Since December 2019, he has been a member of the Special Committee for Activation of Research in Emergency AI of the Japanese Association for Acute Medicine. | | Dr. Abe has been elected in the 2020 Forbes 30 Under 30 Asia Healthcare & Science category.
Content updated on Feb 6, 2025
Following the Medical Content Editorial Policy
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- Blood when ejaculating
- Semen has blood
- Blood in semen
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Link to full study:
https://www.medrxiv.org/content/10.1101/2024.08.29.24312810v1References
Mathers MJ, Degener S, Sperling H, Roth S. Hematospermia-a Symptom With Many Possible Causes. Dtsch Arztebl Int. 2017 Mar 17;114(11):186-191. doi: 10.3238/arztebl.2017.0186. PMID: 28382905; PMCID: PMC5387851.
https://pubmed.ncbi.nlm.nih.gov/28382905/