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blood in urine

By Anonymous January 21, 2012 - 10:07pm
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i'm a male an when starting to urine sometimes i see blood at the start what causes that?

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Hi Anon,

Blood in the urine is also known as Hematuria. Hematuria has many different causes.

  • Blood in the urine can come from any condition that results in infection,inflammation, or injury to the urinary system.
  • Typically, microscopic hematuria indicates damage to the upper urinary tract (kidneys), while visible blood indicates damage to the lower tract (ureters, bladder, or urethra). But this is not always the case.
  • The most common causes in people younger than 40 years of age are kidney stones or urinary tract infections.
  • These may also cause hematuria in older people, but cancers of the kidneybladder, and prostate become a more common concern in people older than 40 years of age.
  • Several conditions causing hematuria may exist at the same time.
  • Some causes of hematuria are serious, others are not. Your health-care provider will perform tests to help tell the difference.

The well-known causes of blood in the urine include the following:

  • Kidney stones
  • Infections of the urinary tract (UTIs) or genitals
  • Blockage of the urinary tract, usually the urethra: by a stone, a tumor, a narrowing of the opening (stricture), or a compression from surrounding structures
  • Cancer of the kidney, bladder, or prostate
  • Kidney disease
  • Blood-clotting disorders
  • Injury to the upper or lower urinary tract, as in a car accident or a bad fall (especially falls onto your back)
  • Medications: antibiotics (for example, rifampin [Rifadin]), analgesics such asaspirin, anticoagulants (blood thinners such as warfarin, [Coumadin]),phenytoin (Dilantin), quinine (Quinerva, Quinite, QM-260)
  • Benign (noncancerous) enlargement of the prostate known as benign prostatic hypertrophy (BPH), a common condition in older men
  • Chronic diseases such as diabeteshypertension, and sickle cell anemia
  • Viral infections
  • Inflammation of the kidney, usually of unknown cause
  • Strenuous exercise, especially running, results from repeated jarring of the bladder. In one study, 24% of runners who competed in an ultra-long-distance marathon had hematuria after the race. The hematuria disappeared within seven days. A 20% incidence has been found in marathon runners.

Sometimes no cause is found for blood in the urine.

Please make sure you see a doctor about the blood in your urine.



January 22, 2012 - 7:11am
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