Hematospermia: Causes, Symptoms & When to See a Doctor

Blood in semen (hematospermia) is alarming but usually benign and self-limiting. It affects men of all ages, peaking 30–40. The semen's yellow-white color makes even tiny blood volumes visually striking.

Common Causes

• Prostatitis (acute/chronic): Inflammation ± infection. #1 cause. Often with perineal pain, urinary symptoms.
• Seminal vesiculitis: Inflammation of seminal vesicles (produce 70% seminal fluid).
• Benign prostatic hyperplasia (BPH): Vascular fragility in enlarged prostate.
• Prostate biopsy: 80%+ have hematospermia for weeks post-procedure.
• Vasectomy / reversal: Transient, weeks to months.
• Trauma / vigorous activity: Cycling, horseback, masturbation.
• STIs: Chlamydia, gonorrhea, trichomonas — urethritis spreads.
• Medications: Anticoagulants (warfarin, DOACs), antiplatelets, SSRIs (platelet dysfunction).
• Structural: Cysts, stones, strictures, varicoceles.
• Malignancy (rare): Prostate, testicular, bladder, seminal vesicle cancer. Risk increases >40, persistent >1 month, risk factors.
• Systemic: Hypertension, liver disease, amyloidosis.

Evaluation Algorithm

1. History: Duration, frequency, volume, associated symptoms (pain, dysuria, hematuria), sexual activity, meds, trauma, family history.
2. Physical: Genital, prostate (DRE), inguinal nodes.
3. Labs: Urinalysis + culture, STI panel (NAAT), PSA (if >40 or risk factors), CBC, coagulation if on anticoagulants.
4. Imaging (if persistent/recurrent/risk factors): TRUS (prostate, seminal vesicles), MRI pelvis, scrotal ultrasound.
5. Cystoscopy: If urethral/bladder source suspected.

Red Flags: Urology Referral Needed

• Age >40 (or >50 for Black men)
• Persistent >4 weeks or recurrent >3 episodes
• Painful ejaculation, perineal/testicular pain
• Hematuria (blood in urine)
• Abnormal DRE (nodule, asymmetry, induration)
• Elevated/rising PSA
• Weight loss, bone pain
• Known bleeding disorder / anticoagulation

Treatment

• Benign/self-limited: Reassurance, observation. Usually resolves weeks–months.
• Infection: Targeted antibiotics (fluoroquinolones, doxycycline, azithromycin) 2–4 weeks.
• Prostatitis: Antibiotics + alpha-blocker + anti-inflammatory.
• Anticoagulant-related: Assess risk/benefit with prescriber; rarely stop.
• Malignancy: Multidisciplinary oncology.

One episode, <40, no other symptoms → reassure. Anything else → investigate. Most hematospermia is noise, not signal—but the signal matters.