13 Apr Seeing Blood in Your Urine? 5 Common Causes of Hematuria Explained
Seeing Blood in Your Urine? 5 Common Causes of Hematuria Explained
By Island Hospital | 13 April 2026. 10:00:00 AM
Medical Reviewer:
Noticing a pink or reddish tint in your urine can be alarming.
Sometimes, harmless causes like eating certain foods such as dragonfruit or beets can temporarily change the color of your urine (pseudohematuria).
However, if you haven’t eaten anything that could cause this change, or if the discoloration persists, it could signal an underlying medical issue.
Understanding the common causes of blood in the urine, also known as hematuria, is key to knowing when to seek medical attention. Let’s dive into it.
What Is Hematuria
Hematuria is the medical term for blood in your urine.
It is classified into two main types:
- Gross Hematuria – Blood is visible in the urine, causing it to appear pink, red, or brown.
- Microscopic Hematuria – Blood is present but only detectable under a microscope during a urinalysis.
| Type | Visibility | Typical Concern |
|---|---|---|
| Gross | Visible | Often linked to infections, stones, or trauma |
| Microscopic | Not visible | Can indicate early kidney disease or cancer |
Blood in the urine isn’t a disease by itself but a sign that something is happening in your urinary tract, which includes your kidneys, ureters, bladder, and urethra.
While sometimes it’s caused by something as harmless as consuming certain foods or vigorous exercise, it can also signal conditions that require medical attention, such as infections, kidney stones, or more serious issues.
Common Causes of Blood in Urine
Blood in the urine, or hematuria, can result from a variety of conditions by which some are minor, and others more serious. Here are the most common causes:
1. Urinary Tract Infections (UTIs)
Infections in the bladder or urethra can irritate the lining, sometimes causing bleeding. People may also notice burning, urgency, or frequent urination.
2. Kidney Stones
These hard mineral deposits can scratch or block parts of the urinary tract, leading to visible blood in urine. Pain in the back or sides often accompanies kidney stones.
3. Trauma or Injury
A fall, accident, or sports-related injury to the kidneys or bladder can cause bleeding, sometimes appearing immediately after the trauma.
4. Medications
Certain drugs, including blood thinners (anticoagulants), some antibiotics, and chemotherapy agents, may increase the risk of hematuria.
5. Exercise-Induced Hematuria
Strenuous exercise, especially long-distance running or high-impact workouts, can temporarily cause blood to appear in urine. This usually resolves on its own.
Understanding these causes can help you distinguish between harmless and potentially serious reasons for blood in urine, alongside guiding you when to seek medical attention.
Serious Causes You Shouldn’t Ignore
While many cases of hematuria are harmless, some underlying conditions can be serious and require prompt medical attention:
1. Bladder Cancer
Painless blood in urine is often the first warning sign of bladder cancer. Even without other symptoms, hematuria should never be ignored, especially in adults over 50.
2. Kidney Cancer
It’s a common misconception that “no pain means no problem.” If you notice blood in your urine, this can be a silent signal of underlying kidney health issues such as kidney cancer. Early detection is your most effective tool to prevent it from getting worse.
3. Prostate Issues
In men, an enlarged prostate or prostate cancer can sometimes lead to hematuria. Other urinary symptoms may include difficulty urinating or weak urine flow.
4. Glomerulonephritis
This rare kidney disorder causes inflammation of the glomeruli (tiny filtering units in the kidney) which can lead to blood in urine along with swelling and other symptoms.
Red Flag: Painless hematuria, particularly in adults over 50, should always prompt a medical evaluation. Early detection can make a significant difference in outcomes.
Symptoms and Red Flags
Blood in urine may appear painless or painful. Other symptoms can include:
Seek urgent medical care if you notice:
If your doctor orders a urinalysis, fret not. It’s a fast and painless way to check for infections or kidney issues. Learn what the test involves and why it matters in our article on: What Is Urinalysis and What to Expect.
Risk Factors
Knowing the risk factors for hematuria can help you stay vigilant and seek care early:
- Age: The risk of hematuria and underlying urinary tract conditions increases after age 50.
- Smoking: Tobacco use is strongly linked to bladder and kidney cancers.
- Family History: A family history of kidney or urinary tract cancers may raise your risk.
- Chronic Kidney Disease: Pre-existing kidney conditions can make bleeding in the urinary tract more likely.
- Exercise or Trauma: Strenuous activity or injury to the urinary tract can cause temporary hematuria.
Diagnosis & Tests
To pinpoint why blood is appearing in your urine, doctors rely on a combination of tests that examine your urine, kidneys, and urinary tract:
- Urinalysis: Detects blood cells under a microscope.
- Urine Culture: Identifies bacterial infections.
- Imaging Tests: Ultrasound, CT scan, or MRI to check kidneys and urinary tract.
- Cystoscopy: A small camera examines the bladder and urethra.
- Blood Tests: Evaluate kidney function and detect systemic causes.
Hematuria Treatment Options
Treatment for blood in the urine depends on the underlying cause, ranging from simple antibiotics to more advanced medical interventions.
Let’s have a look at the breakdown:
| Causes | Treatment Options |
|---|---|
| Urinary Tract Infections (UTIs) | Antibiotics to clear the infection. |
| Cancers (Bladder, Kidney, Prostate) | Surgery, chemotherapy, radiation, or a combination depending on the type and stage. |
| Kidney Stones | Pain management, increased hydration, and in some cases, surgical removal or procedures to break up the stones. |
| Glomerulonephritis | Medications to reduce kidney inflammation and manage symptoms. |
| Microscopic Hematuria without Clear Cause | Monitoring with regular follow-ups and repeat testing to detect any developing condition early. |
It is important to never try to treat blood in your urine at home.
Proper evaluation by a healthcare professional is essential to identify the underlying cause and receive safe, effective treatment.
Prevention & Lifestyle Tips
Not all cases of blood in the urine can be prevented, but adopting healthy habits can help reduce your risk:
- Stay Hydrated: Drinking plenty of water helps flush the urinary tract and prevent infections and kidney stones.
- Mind Your Diet: Limit salt, processed foods, and foods known to increase the risk of kidney stones.
- Exercise Smartly: Gradually increase intensity to avoid trauma-related hematuria.
- Quit Smoking: Smoking is a major risk factor for bladder and kidney cancer.
- Be Aware of Local Foods and Supplements: Certain regional foods or herbal remedies can temporarily change urine color. Knowing what you consume helps distinguish harmless changes from warning signs.
Paediatric Hematuria
Children can also experience blood in their urine, but the causes and considerations may differ from adults:
- Common Causes: Often related to urinary tract infections, minor trauma, or congenital kidney conditions.
- Serious Conditions Are Rare: While less common, hematuria can sometimes signal more serious kidney or urinary tract issues and early evaluation is important.
- Seek Medical Advice Promptly: Even if your child appears healthy, any presence of blood in urine should be assessed by a paediatric professional to rule out underlying problems.
Emotional Impact & Patient Guidance
Seeing blood in your urine can be alarming and stressful. Here’s how to manage both the emotional and practical sides using this simple checklist:
Tip: Keeping a clear record empowers you and helps your doctor identify the cause of hematuria faster.
Urinary tract infections are a common source of discomfort for many women if left untreated. Find out how early diagnosis and effective treatment from urologists at Island Hospital can help you get relief and protect your urinary health in this article: Urinary Tract Infections (UTI) in Women
Don’t Guess When It Comes to Health
Blood in your urine is a symptom that should never be ignored. While it can be caused by minor issues like urinary tract infections or kidney stones, it may also signal more serious conditions such as bladder or kidney cancer.
Early evaluation and accurate diagnosis are essential for effective treatment and peace of mind.
Our professional team of urologists at Island Hospital specialise in diagnosing and treating hematuria. They can perform the right tests, identify the underlying cause, and recommend personalised treatment plans to protect your urinary health.
Take action today and book an appointment with us.
Early attention can make a critical difference in outcomes and help you stay healthy.
FAQs
Is hematuria an emergency?
Not all cases of blood in the urine are emergencies, but it should never be ignored.
When to seek urgent care:
- Sudden, heavy bleeding that turns your urine dark red or cola-colored.
- Blood accompanied by severe pain, fever, or difficulty urinating.
- Blood in urine after a significant injury or trauma.
When to schedule a prompt but non-emergency evaluation:
- Persistent or recurring blood in urine without pain.
- Microscopic hematuria detected during routine tests.
- Any new symptoms in adults over 50, even if mild.
How long will hematuria last?
The duration of blood in urine depends on the underlying cause:
- Urinary Tract Infections (UTIs): Usually resolves within a few days of starting antibiotics.
- Kidney Stones: May last until the stone passes or is treated. This sometimes takes a few days to a couple of weeks.
- Exercise-Induced Hematuria: Often clears within 24–48 hours after rest and hydration.
- Serious Conditions (e.g., cancers or glomerulonephritis): Duration varies and depends on treatment and follow-up care.
Can I live with hematuria?
Hematuria is a sign that something is happening in your urinary tract.
While some causes are minor and temporary, like a urinary tract infection or exercise-induced bleeding, ignoring it can lead to serious health problems.
- Minor Causes: Conditions like UTIs or kidney stones usually resolve once treated.
- Persistent or Serious Causes: If hematuria is left untreated, it could signal kidney damage, worsening urinary tract problems, or life-threatening medical issues such as cancer.
How bad is a UTI if there is blood?
Blood in the urine during a urinary tract infection (UTI) can be alarming, but it doesn’t always mean the infection is severe. It usually indicates irritation or inflammation of the bladder or urinary tract.
- Mild to Moderate UTIs: Blood may appear with typical symptoms like burning during urination, urgency, or frequent trips to the bathroom. With proper antibiotics, these infections usually clear quickly.
- Complicated UTIs: If the infection reaches the kidneys (pyelonephritis) or is left untreated, it can cause more serious complications such as kidney damage, high fever, or sepsis.
Does hematuria need surgery?
Most cases of hematuria do not require surgery. Whether surgery is needed depends entirely on the underlying cause:
- Non-surgical Causes: Urinary tract infections, kidney stones that can pass naturally, or exercise-induced hematuria usually resolve with medication, lifestyle changes, or simple monitoring.
- Surgical Causes: In some cases such as large kidney stones that cannot pass on their own, bladder abnormalities, or certain cancers, surgery may be necessary to treat the condition and stop the bleeding.
