Blood in Urine: Causes and Necessary Tests - Urology

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Urinary issues?


Doctor, I have been experiencing diarrhea for the past three days, and later I noticed blood in my urine.
However, I don't feel anything unusual when urinating, just a slight warmth.
What could be the issue? What tests should I undergo? Thank you.

A Da, 10~19 year old female. Ask Date: 2013/09/30

Dr. Lin Hexing reply Urology


Hello: Having diarrhea for three days may lead to dehydration, which can cause a urinary tract infection (UTI).
UTIs often present with symptoms such as urinary urgency, which aligns with your symptoms.
It is recommended that you visit a nearby hospital's urology or family medicine clinic for a urinalysis.
If an infection is confirmed, appropriate treatment should be initiated.
If only urinary urgency is present, further evaluation will be necessary.
Wishing you good health.

Reply Date: 2013/09/30

More Info


Blood in urine, or hematuria, can be a concerning symptom that warrants further investigation, especially when accompanied by other symptoms such as diarrhea. In your case, the presence of blood in your urine after experiencing diarrhea raises several possibilities that need to be explored.

First, it’s important to understand that hematuria can arise from various causes, including urinary tract infections (UTIs), kidney stones, trauma, or more serious conditions such as tumors or glomerular diseases. Given that you have also been experiencing diarrhea, this could suggest a systemic issue or an infection that may be affecting both your gastrointestinal and urinary systems.

The sensation of "heat" during urination may indicate inflammation or irritation in the urinary tract, which could be due to a UTI. UTIs can cause symptoms such as burning during urination, frequent urination, and sometimes, hematuria. It’s also worth noting that dehydration from diarrhea can concentrate the urine, potentially leading to irritation of the bladder or urethra.

To address your situation, several tests and evaluations are recommended:
1. Urinalysis: A comprehensive urinalysis can help determine the presence of red blood cells, white blood cells, bacteria, and other substances in the urine. This test can help identify infections or other abnormalities.

2. Urine Culture: If a UTI is suspected, a urine culture can help identify the specific bacteria causing the infection and determine the appropriate antibiotic treatment.

3. Blood Tests: A complete blood count (CBC) can assess for signs of infection or anemia, while kidney function tests can evaluate how well your kidneys are working.

4. Imaging Studies: Depending on the findings from the urinalysis and blood tests, imaging studies such as an ultrasound or CT scan may be necessary to visualize the kidneys and urinary tract for stones, tumors, or other abnormalities.

5. Stool Tests: Given your recent diarrhea, stool tests may be warranted to check for infections, parasites, or other gastrointestinal issues that could be contributing to your symptoms.

It’s crucial to seek medical attention promptly, especially since blood in the urine can indicate a serious underlying condition. Ignoring these symptoms could lead to complications, particularly if there is an infection that requires treatment.
In summary, the combination of diarrhea and hematuria should not be taken lightly. A thorough evaluation by a healthcare professional is essential to determine the underlying cause and initiate appropriate treatment. Please consult with a physician as soon as possible to discuss your symptoms and undergo the necessary tests. Early intervention can significantly improve outcomes and prevent further complications.

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