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Urinary Tract Infection (cont.)

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How long does a UTI last after treatment with antibiotics?

Symptoms of lower urinary tract infections usually resolve within 24 hours of starting the medication. The full amount of prescribed antibiotics should be taken even if the symptoms are fully gone.

Upper urinary tract symptoms (pyelonephritis) will usually take longer to respond to treatment. The patient will usually improve within 24 hours, but it will often take longer until all symptoms resolve.

What follow-up is needed for a urinary tract infection?

Follow a health-care professional's treatment recommendations. Finish all medications even if feeling better before the medication is gone. A health-care professional will want the patient to have a follow-up appointment to repeat the urinalysis and make sure he or she is getting better.

  • Children and adults with kidney involvement should be seen again in one to two days.
  • People recovering from uncomplicated lower urinary tract infections might be told that they only have to return if symptoms don't go away or if they return.

Occasionally, the infection does not go away with the first treatment. If someone is being treated for an infection and has any of the following, call a health-care professional promptly:

  • Fever or pain with urination is not gone after two days of antibiotic treatment.
  • Someone cannot keep the medication down or it has severe side effects.
  • Someone is unable to keep foods, fluids, or medication down because of nausea or vomiting.
  • Someone develops signs of kidney involvement (such as flank pain, shaking chills, high fever).
  • Someone's symptoms are worse rather than better after two days of antibiotics.
Medically Reviewed by a Doctor on 6/12/2017


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