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A 47-year-old member asked:

Why does a urinary tract infection cause blood in urine?

1 doctor answer3 doctors weighed in
Dr. Jason Kline
Nephrology and Dialysis 20 years experience
Inflammation. : Bacterial infections can cause inflammation/irritation of the lining of your urinary tract leading to traces of blood making its way in your urine. Also explains why sometimes with a bad cold we sometimes see streaks of blood in mucous and phlegm. Bacteria similarly cause irritation of the respiratory tract lining.

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