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Hematuria: 10 Causes of Blood in the Urine

Blood in the urine is medically referred to as hematuria.  There are two main types of hematuria: gross and microscopic.  Gross hematuria can be seen in the urine with the naked eye.  Microscopic hematuria is visible only under a microscope.  Blood in the urine can come from anywhere in the urinary tract.  The urinary tract includes the kidneys (where urine is made), the ureters (tubes that carry urine from the kidneys to the bladder), the bladder (where urine is stored), the prostate (in men), and the urethra (tube through which urine exits the body).

The following are ten causes of blood in the urine…


1. Urinary Tract Infection

Blood in the urine, or hematuria, may be a symptom of a urinary tract infection (UTI).  A UTI can occur in any part of the urinary tract.  Bacteria entering the urethra and multiplying within the bladder cause the majority of UTIs.  The National Kidney and Urologic Diseases Information Clearinghouse estimates that UTIs account for greater than 8-million doctor visits annually in the US.  Women are more likely to develop UTIs due to the short length of their urethra and its close proximity to the anus.

Other symptoms of a UTI may include frequent urination, pain or burning with urination (dysuria), and foul-smelling urine.  A UTI is most commonly diagnosed by analyzing a urine sample (urinalysis) followed by urine culture to identify the causative organism.  Oral antibiotics are the mainstay of treatment for UTIs.  When treated promptly and accurately, urinary tract infections rarely lead to complications.


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