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What causes blood in urine and frequent urination? 14 possible conditions

See a list of possible causes in order from the most common to the least.


Urinary Tract Infection

UTIs are usually caused by bacteria and can occur in any part of the urinary tract. Symptoms of upper UTIs include pain in the upper back, chills, fever, and nausea.

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Benign Enlargement of Prostate

Benign enlargement of the prostate, or benign prostatic hyperplasia, is a common condition where the prostate gland swells beyond normal size. It is a normal condition of male aging but can interfere with urination.

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Kidney Stones

Kidney stones are solid masses of crystalized calcium or other substances that originate in the kidneys but can pass through the urinary tract. The greatest risk factor is making less than one liter of urine per day.

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Bladder Stones: The Bad, the Ugly, and the Good

Bladder stones are crystals that form when concentrated urine is left in the bladder after urination, often due to dehydration or being unable to empty the bladder totally. Symptoms include painful urination and others.

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Urethritis is an infection of the urethra, the tube that carries urine from the bladder and semen out of the body. Symptoms include burning while urinating, abdominal pain, and discharge.

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Bladder Cancer

Bladder cancer occurs in the tissues of the bladder, which is the organ that holds urine. Fatigue, weight loss, painful or frequent urination, and abdominal or back pain are symptoms.

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Urethral Stricture

Usually the urethra is wide enough for urine to flow freely through it. When it narrows, it can restrict urinary flow. This is known as a urethral stricture.

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Pyelonephritis is an inflammation of the kidney and upper urinary tract. Symptoms include flushed skin, back pain, fever, and nausea.

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Prostate Cancer Overview

Learn prostate cancer information, causes, symptoms and treatments.

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Polycystic Kidney Disease

Polycystic kidney disease (PKD) is an inherited kidney disorder that causes fluid-filled cysts to form in the kidneys. Abdominal and back pain, easy bruising, and fatigue are possible signs.

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Chronic Nonbacterial Prostatitis

Chronic nonbacterial prostatitis causes pain and inflammation in the prostate and the lower urinary tract in men. It's a common condition, especially in men between the ages of 35 and 50 and the cause is often unknown.

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Transitional Cell Cancer (Malignant Neoplasm of Ureter)

Urine collects in the renal pelvis and is drained by the ureter into the bladder. When cancer develops in the renal pelvis or ureter, it begins in transitional cells, which line these organs.

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Reactive Arthritis (Reiter's Syndrome)

Reiter's syndrome produces inflammation, swelling, and pain in the joints due to infection elsewhere in the body. Symptoms include mouth ulcers, painful urination, and urethral discharge.

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Hypercalcemia is a condition in which you have too much calcium in your blood. Serious cases could cause symptoms like abdominal pain, nausea, constipation, and weakness.

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This feature is for informational purposes only and should not be used to diagnose.
Please consult a healthcare professional if you have health concerns.