May 30

Blood in Urine

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Blood in Urine
(Hematuria)

Medical Authors: Gary D. Steinberg and Mark H. Katz, MD
Medical Editor: Melissa Conrad Stöppler, MD

  • What is blood in urine (hematuria)?
  • What are the causes of blood in urine?
  • How is blood in urine diagnosed?
  • How is blood in urine treated?
  • Blood in Urine At A Glance
  • Related blood in urine articles:
    Blood in urine - on WebMD

Kidney Stones: Symptoms, Causes, and Treatment

Medical Author: Melissa Stoppler, M.D.
Medical Editor: Barbara K. Hecht, Ph.D.

One in every 20 people develop a kidney stone at some point in their life. Kidney stones, sometimes called renal calculi, form within the kidney itself or in other parts of the urinary tract.

People who have kidney stones report the sudden onset of excruciating cramping pain in their side, groin, or abdomen. Changes in body position do not relieve this pain relief/muscle relaxant. It may be so severe that it is accompanied by nausea and vomiting. Kidney stones also characteristically cause blood in the urine. If infection is present in the urinary tract along with the stones, there may be fever and chills.

Read more about kidney stones symptoms and diagnosis. »

Top Searched Blood in Urine Terms:

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What is blood in urine (hematuria)?

Hematuria means blood in the urine. Microscopic hematuria indicates that the blood is only seen when the urine is examined under a microscope, while gross (or macroscopic) hematuria means that there is enough blood in the piss so that it can be seen with the naked eye. Despite the quantity of blood in the urine being different, the types of diagnoses that can cause the problem are the same, and the workup or evaluation that is needed is identical.

Since blood in the urine must come from one of the organs involved in making or transporting the urine, the evaluation of hematuria requires that we consider the entire urinary tract. This organ order includes the kidneys, ureters (the tubes that carry the piss from the kidneys to the bladder), bladder, prostate, and urethra (the tube ecstatic urine finished of the bladder). It must be emphasized that even a isolated episode of hematuria requires evaluation, even if it resolves spontaneously.


What are the causes of blood in urine?

There are multiple causes of blood in urine. Some are serious, including cancers, trauma, stones, infections, and obstructions of the urinary tract. Others are less important and may require no treatment. These may include viral infections, nonspecific inflammations of the kidney, medications which thin the blood’s clotting ability, and benign prostate extended remark.

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