Read below about bright red (bloody) urine, including causes and common questions. Or get a personalized analysis of your bright red (bloody) urine from our A.I. health assistant. At Buoy, we build tools that help you know what’s wrong right now and how to get the right care.

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A.I. Health Assistant Causes for Bright Red (Bloody) Urine

The list below shows results from the use of our A.I. Health Assistant by Buoy users who experienced bright red (bloody) urine. This list does not constitute medical advice.

  1. 1.Urinary Tract Infection

    In women, the opening to the urethra (the tube that carries urine from the bladder to the outside of the body) is very close to the anus, and bacteria from the anus can easily escape and travel up the urethra. These bacteria can infect the bladder, and cause what is known as a urinary tract infection (UTI).

    Symptoms most often go away within 24 to 48 hours after treatment begins.

    Rarity:
    Common
    Top Symptoms:
    abdominal cramps (stomach cramps), pelvis pain, sudden urgency to urinate, signs of urinary tract inflammation, urinary changes
    Symptoms that always occur with urinary tract infection:
    signs of urinary tract inflammation
    Urgency:
    Phone call or in-person visit
  2. 2.Urethritis

    Urethritis is an inflammation of the urethra, which is the tube that carries urine away from the bladder.

    Within a day or two of antibiotic treatment, symptoms usually resolve.

    Rarity:
    Common
    Top Symptoms:
    painful urination, penis pain, fluid leaking, pink/blood-tinged urine, cloudy urine
    Urgency:
    Primary care doctor
  3. 3.Kidney Stone

    A kidney stone is a solid piece of material that forms in the kidney from substances in the urine. Most kidney stones pass out of the body without help from a doctor. But sometimes a stone will not go away. It may get stuck in the urinary tract, block the flow of urine and cause great pain.

    The prognosis for a kidney stone is good, as it is not a chronic condition. Once the stone has passed, the pain will go away. However, if you have had a kidney stone, you have about a 1 in 2 chance of getting another one in five to seven years. This can be prevented by: 1. Drinking more than 2 liters (2.11 quarts) of water a day. 2. Eating a healthy diet with foods rich in calcium such as milk and other dairy products, peas and beans, leafy green vegetables, nuts, and bony fish like sardines and salmon. 3. Avoiding use of lots of salt in cooking. 4. Eating more vegetables, as they help make urine less acidic.

    Rarity:
    Uncommon
    Top Symptoms:
    abdominal or flank pain, nausea, abdominal pain that comes and goes, diarrhea, pelvis pain
    Symptoms that always occur with kidney stone:
    abdominal or flank pain
    Urgency:
    Hospital emergency room
  4. 4.Kidney Infection (Pyelonephritis)

    Pyelonephritis is the medical term for a kidney infection. This can arise as a result of a bladder infection that travels upstream. A kidney infection is usually bacterial in nature, and can cause pain on the side of the stomach, high fever, nausea, and blood in the urine.

    Course of antibiotics for 7-14 days, but symptoms should begin to improve after 48 hours.

    Rarity:
    Uncommon
    Top Symptoms:
    abdominal pain (stomach ache), nausea, pelvis pain, back pain, vomiting
    Symptoms that never occur with kidney infection (pyelonephritis):
    mid back pain from an injury
    Urgency:
    Hospital emergency room
  5. 5.Benign Prostatic Hypertrophy (Bph)

    The prostate is a gland in men. It helps make semen, the fluid that contains sperm. The prostate surrounds the tube that carries urine out of the body. As men age, their prostate grows bigger. If it gets too large, it can cause problems. An enlarged prostate is also called benign prostatic hyperplasia (BPH). Most men will get BPH as they get older. Symptoms often start after age 50.

    This is a chronic condition but can be well controlled with medication.

    Rarity:
    Common
    Top Symptoms:
    sudden urgency to urinate, waking up regularly to pee at night, frequent urination, constant but weak urination stream, feeling of not getting everything out when urinating
    Urgency:
    Primary care doctor

    Bright Red (Bloody) Urine Checker

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  6. 6.Acute Prostatitis

    Acute prostatitis is quickly developing swelling and irritation of the prostate gland. The prostate gland sits under the bladder, near the rectum (end of the large intestine), and it makes the fluid that carries sperm.

    2 week treatment, may be 4-6 weeks depending on severity of infection.

    Rarity:
    Rare
    Top Symptoms:
    penis pain, fever, urinary changes, painful urination, chills
    Urgency:
    Hospital emergency room
  7. 7.Bladder Cancer

    The bladder is a hollow organ in your lower abdomen that stores urine. Bladder cancer, which occurs in the lining of the bladder, is the sixth most common type of cancer in the United States.

    Your outcome is dependent on the extent of the disease.

    Rarity:
    Rare
    Top Symptoms:
    abdominal pain (stomach ache), constipation, pelvis pain, side pain, frequent urination
    Urgency:
    Primary care doctor
  8. 8.Prostate Neoplasm

    The prostate gland sits under the bladder, near the rectum (end of the large intestine), and it makes the fluid that carries sperm. Prostate cancer is the most common cancer among men in the United States. It is different from other cancers because small areas of cancer within the prostate are actually very common, especially in older men.

    Variable but generally very good outlook, especially compared with other cancers.

    Rarity:
    Uncommon
    Top Symptoms:
    frequent urination, waking up regularly to pee at night, painful urination, constant but weak urination stream, feeling of not getting everything out when urinating
    Urgency:
    Primary care doctor
  9. 9.Rhabdomyolysis

    Rhabdomyolysis is a syndrome most commonly resulting from muscle injury following extreme exertion such as endurance exercise or weight lifting or following a severe accident. Sometimes rhabdomyolysis may result from medications - most commonly medications to treat elevated cholesterol such as statins. Severity can range from mild to life threatening kidney disease from muscle enzymes entering the circulation.

    Most patients recover in a few days but occasionally will need prolonged hospital care if the kidneys are injured.

    Rarity:
    Rare
    Top Symptoms:
    fatigue, nausea, muscle aches, being severely ill, change in urine color
    Urgency:
    Emergency medical service
  10. 10.Interstitial Nephritis

    The tissue of the kidneys can become inflamed for many different reasons, ranging from medications to infection to our own immune system

    2 weeks if recognized

    Rarity:
    Rare
    Top Symptoms:
    fatigue, loss of appetite, joint pain, side pain, fever
    Urgency:
    Primary care doctor

Questions Your Doctor May Ask About Bright Red (Bloody) Urine

  • Q.Have you been feeling more tired than usual, lethargic or fatigued despite sleeping a normal amount?
  • Q.Do you feel pain when you urinate?
  • Q.Any fever today or during the last week?
  • Q.Are you sexually active?

If you've answered yes to one or more of these questions, try our bright red (bloody) urine symptom checker to find out more.

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Bright Red (Bloody) Urine Symptom Checker Statistics

  • People who have experienced bright red (bloody) urine have also experienced:

    • 12% Painful Urination
    • 6% Abdominal Pain (Stomach Ache)
    • 5% Pink / Blood - Tinged Urine
  • People who have experienced bright red (bloody) urine were most often matched with:

    • 50% Kidney Stone
    • 33% Urethritis
    • 16% Urinary Tract Infection
  • Source: Aggregated and anonymized results from visits to the Buoy AI health assistant (check it out by clicking on “Take Quiz”).

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