Hematuria Causes, Types, Treatment Options & Symptoms

What is Hematuria?

Hematuria is the medical term for the presence of red blood cells in the urine. At some point between the kidneys and the urethra, blood seeps into the urinary tract. The urine may change color significantly or appear completely normal to the naked eye.

Here are some of the most common signs of hematuria you may experience:

• Pink or Red Urine: Urine appears light pink, bright red, or deep red. Even a small amount of blood can produce this color change.
• Cola-Colored Urine: Urine appears dark brown or resembles tea. This coloration often suggests that blood has been present for some time or that the source lies within the kidneys.
• Blood Clots: Small, dark red clots appear in the urine stream. These clots can cause pain as they pass through the narrow urinary tubes.
• Painful Urination: A burning sensation or sharp pain occurs while passing urine. This symptom often accompanies infections or the passage of stones.
• Back or Side Pain: A dull ache or sharp pain develops in the flank area just below the ribs. This discomfort often relates to kidney issues or the presence of stones.
• Urgent Need to Urinate: A sudden, strong pressure to empty the bladder occurs frequently. This urgency is common when the bladder lining becomes irritated.

What are the Common, Uncommon & Underlying Causes of Hematuria?

Blood in the urine can result from infections, physical injuries, or chronic medical conditions. Some causes are temporary and can be resolved with treatment, while others require long-term management. Identifying the bleeding source is the first step in clinical evaluation.

Here are some reasons for hematuria:

• Urinary Tract Infection: Bacteria enter through the urethra and multiply in the bladder. The resulting inflammation causes bleeding and pain during urination.
• Kidney Infection: Bacteria travel from the bloodstream or ureters into the kidneys. A kidney infection often causes fever, flank pain, and blood in the urine.
• Bladder or Kidney Stones: Minerals in concentrated urine form permanent crystals on the walls of these organs. Stones cause bleeding when they scratch the lining of the urinary tract.
• Enlarged Prostate: The prostate gland often grows larger in men as they reach middle age. This growth compresses the urethra and can cause bleeding or difficulty urinating.
• Kidney Disease: Inflammation of the kidney’s filtering system causes red blood cells to leak into the urine. Kidney disease may occur independently or as a complication of conditions such as diabetes.
• Cancer: Malignant tumors in the kidney, bladder, or prostate can cause visible urinary bleeding. Such bleeding often appears in the advanced stages of disease.
• Inherited Disorders: Conditions such as sickle cell anemia affect the hemoglobin in red blood cells. These disorders can cause both visible and microscopic blood in the urine.
• Kidney Injury: A blow or forceful impact to the kidneys, caused by an accident or contact sports, can cause bleeding. Blood in the urine typically appears shortly after the physical trauma.
• Specific Medications: Certain drugs, including the chemotherapy agent cyclophosphamide and penicillin, can cause urinary bleeding. Blood thinners such as aspirin or heparin may also contribute to the condition.
• Strenuous Exercise: Intense physical activity can cause red blood cells to leak into the urinary tract. This occurrence is rare and usually resolves with rest within a few days.
• Endometriosis: Endometrial tissue that grows near the bladder or ureters in women can lead to blood in the urine during menstrual cycles.
• Radiation Therapy: Treatment for pelvic cancers can irritate the bladder lining over time. This irritation may result in chronic bleeding, a condition known as radiation cystitis.

When Should You Visit a Specialist for Hematuria?

Visible blood in the urine always requires a medical evaluation by a urologist or nephrologist. Even when the bleeding stops on its own, the underlying cause may still need treatment. Early diagnosis helps prevent complications and ensures appropriate care.

Visit your specialist if any of the following signs of hematuria are present:

• Visible Discoloration: Any pink, red, or brown tint in the urine warrants a diagnostic check, even if it occurs only once.
• Persistent Pain: Ongoing pain in the side, back, or lower abdomen may indicate a stone or an infection requiring immediate attention.
• Fever & Chills: A high temperature accompanied by urinary changes often points to a serious infection in the kidneys or prostate. These symptoms together require prompt evaluation.
• Difficulty Urinating: Struggling to start the urine stream or feeling unable to empty the bladder fully is a recognized sign of prostate issues or urinary blockages.
• Unexplained Weight Loss: Weight loss without a clear cause, along with blood in the urine, requires screening for potential tumors.
• Blood in Urine Without Pain (in Men): Visible blood without any physical discomfort is a specific warning sign that specialists must investigate to rule out bladder or kidney growths.

Diagnostic Approach for Hematuria

Specialists use several tests to locate the exact source of bleeding in the urinary tract. The diagnostic process begins with a review of your symptoms and a physical examination. Advanced imaging or direct visualization may be necessary to reach a definitive diagnosis.

Here are the specialist-approved diagnostic steps:

• Physical Examination: The doctor examines your abdomen and back for tenderness or masses. This assessment helps identify physical signs of kidney or bladder issues.
• Urinalysis: A laboratory technician examines a urine sample for red blood cells, bacteria, and mineral crystals. Urinalysis also detects protein levels that reflect kidney function.
• Urine Cytology: A specialist examines urine under a microscope to identify abnormal cells. Urine cytology is a standard screening tool for bladder cancer.
• Ultrasound: This imaging test uses sound waves to create pictures of the kidneys and bladder. Ultrasound safely identifies stones, cysts, and tumors without radiation exposure.
• CT Scan: A computerized tomography scan provides detailed cross-sectional images of the entire urinary tract. The CT scan excels at detecting small stones and structural abnormalities.
• MRI: Magnetic resonance imaging uses magnets and radio waves to visualize internal organs. Doctors rely on MRI when high-contrast images of soft tissues are needed.
• Cystoscopy: A urologist inserts a thin camera-mounted tube through the urethra into the bladder. Direct visualization allows the physician to examine the bladder lining and pinpoint bleeding sites.
• Kidney Biopsy: The doctor removes a small piece of kidney tissue using a needle. A pathologist then examines the sample under a microscope to diagnose specific kidney diseases.

What Are the Types of Hematuria?

Hematuria is categorized based on how blood is detected and its clinical presentation. These classifications help doctors determine the urgency and type of follow-up tests needed. Understanding the type of bleeding guides the entire diagnostic process.

Commonly classified types of hematuria include the following:

• Gross Hematuria: Blood is visible to the naked eye. Urine may appear pink, red, or the color of cola.
• Microscopic Hematuria: Urine looks normal, but laboratory testing detects red blood cells. This form is often identified during routine physical examinations.
• Occult Blood in Urine: Blood is hidden and detectable only through chemical testing. “Occult blood” is another term for microscopic bleeding.
• Idiopathic Hematuria: This classification applies when doctors cannot identify a specific cause for the bleeding. In many cases, idiopathic hematuria is benign and self-resolving.
• Jogger’s Hematuria: This type occurs after repeated bladder trauma during long-distance running. Bleeding typically clears within 48 hours of rest.

How to Treat Hematuria?

Treatment for hematuria focuses on addressing the underlying condition causing the bleeding. Once the doctor identifies the cause, they will recommend a specific medical or surgical plan. Some cases require only monitoring, while others call for active intervention.

Clinical treatments & rehabilitative strategies for underlying causes include the following:

• Antibiotics: Doctors prescribe these medications to eliminate bacterial infections in the bladder or kidneys. Completing the entire course is essential to prevent the infection from returning.
• Alpha-Blockers: These medications relax the muscles in the prostate and bladder neck, improving urine flow and reducing bleeding from an enlarged prostate.
• Shock Wave Lithotripsy: This procedure uses sound waves to break kidney stones into smaller fragments. These fragments then pass naturally out of the body through the urine.
• Ureteroscopy: A surgeon uses a small scope to locate and remove stones in the ureter or kidney. Ureteroscopy is an effective option for stones too large to pass on their own.
• Transurethral Resection: A surgeon removes excess prostate tissue or bladder tumors through the urethra. Transurethral resection helps stop bleeding and restores normal urinary function.
• Medication Adjustment: When a specific drug causes bleeding, the doctor may modify the dosage or prescribe an alternative medication. Never stop taking prescribed drugs without medical guidance.
• Chemotherapy or Radiation: These treatments target and shrink cancerous tumors in the urinary tract. Doctors use them when bleeding is due to a confirmed malignancy.
• Hydration Therapy: Increasing fluid intake flushes the urinary system and prevents the formation of new stones. Adequate hydration remains a fundamental and often underestimated component of long-term urinary health.

What if Hematuria is Left Untreated?

Ignoring blood in the urine can allow a minor issue to progress into a serious health problem. While some causes are benign, others require timely intervention to prevent permanent damage. Without treatment, certain conditions can lead to systemic health complications.

Possible complications of untreated hematuria include the following:

• Anemia: Persistent blood loss reduces the number of healthy red blood cells in the body. This depletion leads to extreme fatigue, weakness, and shortness of breath.
• Kidney Failure: Chronic inflammation or untreated infections can permanently damage the kidneys. Progressive kidney failure may eventually require dialysis or a kidney transplant to sustain life.
• Urinary Retention: Blood clots can obstruct the flow of urine out of the bladder. The resulting blockage causes severe pain and requires emergency medical intervention to drain the bladder.
• Metastasis: When bleeding is caused by cancer, delaying treatment allows the tumor to grow unchecked. Malignant cells may then spread to other organs and tissues throughout the body.
• Sepsis: An untreated urinary or kidney infection can enter the bloodstream, triggering a systemic inflammatory response. Sepsis is a life-threatening emergency that requires immediate hospital care.