In men, benign prostatic hyperplasia (BPH) can compress the urethra. The strain affects urine flow, occasionally causing hematuria.
Kidney Injury
A fall, accident, or intense sport-related trauma can bruise the kidneys, leaving blood visible in the urine.
Strenuous Exercise
Sometimes called “jogger’s hematuria,” intense workouts may trigger temporary bleeding due to bladder irritation or dehydration.
Cancer of the Urinary Tract
Though less frequent, cancers of the bladder, kidney, or prostate may reveal themselves subtly, with blood in urine as an early marker. The American Cancer Society stresses that unexplained hematuria should always be taken seriously.
Symptoms That May Accompany Blood in Urine
Blood in urine rarely exists in isolation. Patients often report:
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Painful or burning urination.
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Lower abdominal or flank pain.
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Cloudy or foul-smelling urine.
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Fever and chills, especially if an infection is present.
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Frequent, urgent urination with minimal output.
The constellation of symptoms matters. For example, flank pain plus fever could indicate a kidney infection, while painless hematuria raises suspicion of malignancy.
When to See a Doctor Immediately
The presence of blood itself is reason enough to consult a doctor, but there are clear red flags:
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Severe back or abdominal pain alongside blood in urine.
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Persistent hematuria that does not resolve within a day.
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Fever, chills, or systemic weakness.
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A history of kidney disease, prostate problems, or urinary tract cancers.
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Dark, tea-colored urine without dietary explanations.
As Dr. Brian Lane, a urologist quoted by Mayo Clinic, emphasizes: “Even a single episode of visible blood in urine warrants evaluation.”
