Overview
Hematuria is the presence of blood in the urine. It can make the urine appear pink, red, or cola-colored, or it may be detected only through a urine test. While seeing blood in the urine can be alarming, hematuria does not always point to a serious condition. However, it should never be ignored.
Hematuria can affect people of all ages and may be caused by a wide range of conditions involving the kidneys, bladder, ureters, urethra, or prostate. Identifying the underlying cause is essential, as treatment depends on what is leading to the bleeding.
Types of hematuria
There are two main types of hematuria, based on how the blood is detected.
- Gross hematuria
Blood is visible to the naked eye, causing the urine to appear pink, red, or brown. - Microscopic hematuria
Blood is present in the urine but can only be seen under a microscope during laboratory testing.
Both types require medical evaluation, even if there is no pain or other symptoms.
Symptoms
Hematuria itself may not cause symptoms, especially in microscopic cases. When symptoms do occur, they are usually related to the underlying cause.
Associated symptoms may include:
- Pain or burning during urination
- Frequent or urgent need to urinate
- Pain in the lower abdomen, back, or sides
- Fever or chills, if infection is present
- Difficulty passing urine
- Passing blood clots in the urine
In some cases, hematuria occurs without any discomfort at all.
Causes
Hematuria can occur due to conditions affecting any part of the urinary tract.
- Kidney-related causes
Kidney stones, infections, inflammation of the kidney filters, and inherited kidney diseases can lead to blood in the urine. - Urinary tract infections
Infections of the bladder or urethra can irritate the urinary lining, causing bleeding. - Stones in the urinary tract
Stones can scratch and irritate the lining of the urinary tract, leading to visible or microscopic bleeding. - Prostate conditions
An enlarged prostate, prostatitis, or prostate cancer can cause hematuria in men. - Tumors or cancers
Cancers of the kidney, bladder, or urinary tract may cause blood in the urine, sometimes without pain. - Medications and strenuous exercise
Certain medicines and intense physical activity can also lead to temporary hematuria.
Risk factors
Factors that increase the risk of hematuria include:
- Urinary tract infections
- Kidney stones
- Enlarged prostate
- Smoking
- Family history of kidney disease
- Long-term use of certain medications
Understanding risk factors helps guide appropriate evaluation.
Complications
Hematuria itself is a symptom rather than a disease. Complications depend on the underlying cause. If serious conditions are left untreated, they may lead to kidney damage, repeated infections, or other long-term problems.
Prompt diagnosis helps prevent complications and provides reassurance when the cause is benign.
Diagnosis
Diagnosing hematuria involves identifying the source of bleeding. Tests may include:
- Urine tests to detect blood, infection, or abnormal cells
- Blood tests to assess kidney function
- Imaging studies such as ultrasound or CT scan
- Cystoscopy to examine the bladder and urethra
- Additional tests based on age, symptoms, and risk factors
A thorough evaluation ensures the correct cause is identified.
Treatment
Treatment for hematuria depends entirely on the underlying cause.
Treatment options may include:
- Antibiotics for infections
- Medications to treat prostate or kidney conditions
- Procedures to remove stones or blockages
- Monitoring in cases where no serious cause is found
Once the cause is treated, hematuria usually resolves.
Prevention and long-term care
Not all causes of hematuria can be prevented, but certain steps may help reduce risk:
- Drink adequate fluids
- Treat urinary infections promptly
- Avoid smoking
- Manage chronic conditions such as high blood pressure
- Attend regular health check-ups
If you notice blood in your urine, early evaluation is the best way to protect your urinary and kidney health.
When to see a doctor
You should see a healthcare professional anytime you notice blood in your urine, even if it appears only once or goes away on its own. Immediate medical attention is needed if hematuria is accompanied by severe pain, fever, or difficulty passing urine.
Early evaluation helps rule out serious conditions and ensures timely treatment.