Health A-Z

Medical Content Created by the Faculty of the Harvard Medical School



A urinary tract infection usually causes one or more of the following symptoms:

  • Unusually frequent urination

  • An intense urge to urinate

  • Pain, discomfort or a burning sensation during urination

  • Awakening from sleep to pass urine

  • Pain, pressure or tenderness in the area of the bladder (in the middle of the lower abdomen, below the navel)

  • Bedwetting in a person who usually had been dry at night

  • Urine that looks cloudy or smells foul

  • Fever, with or without chills

  • Nausea and vomiting

  • Pain in the side or upper back

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From Health A-Z, Harvard Health Publications. Copyright 2007 by the President and Fellows of Harvard College. All rights reserved. Written permission is required to reproduce, in any manner, in whole or in part, the material contained herein. To make a reprint request, contact Harvard Health Publications. Used with permission of StayWell.

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