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Doctor insights on: How Long Does Fever Associated With Pyelonephritis Last

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-got a UTI last sunday, took meds, now wednesday, now chills fever and back aches. Chances of kidney infection? How long do they last?Thx

-got a UTI last sunday, took meds, now wednesday, now chills fever and back aches. Chances of kidney infection? How long do they last?Thx

High risk for kidney: You need to be on prolonged antibiotics. If you have a fever there is risk for serious complications and to be seen in the er for IV therapy. ...Read more

Dr. Mark Diamond
2,227 doctors shared insights

Fever (Definition)

Fever is the temporary increase in the body's temperature in response to some disease or illness. A child has a fever when the temperature is at or above one of ...Read more


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Is it possible to have pyelonephritis and only feel flank or costovertebral angle pain without high fever for a long time?

Is it possible to have pyelonephritis and only feel flank or costovertebral angle pain without high fever for a long time?

Unlikely: Most back pain, even pain that is in the upper back and on one side, is of musculoskeletal origin. In the absence of fever or cloudy urine, infection would be unlikely. Kidney pain without infection is most commonly caused by obstruction to the flow of urine as can occur with kidney stones. There are a variety of rarer causes of flank pain, so see your doctor if it doesn't subside. ...Read more

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I got a kidney infection last week and had bad fever. I took antibiotics and I am better. Did this happen because of sex? Is there a way to prevent?

I got a kidney infection last week and had bad fever. I took antibiotics and I am better. Did this happen because of sex? Is there a way to prevent?

UTI: You can get a UTI from having intercourse.Some ways to prevent it is to drink plenty of liquids, especially water, wipe from front to back, empty your bladder soon after intercourse and then drink a full glass of water to help flush bacteria, and avoid potentially irritating feminine products.If you notice a signs of a UTI get rid of it asap so it doesn't progress to your kidneys hope this helped :]. ...Read more

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Persistent UTI for a few weeks. Last night I woke with nausea and fever, but today I feel fine with mild symptoms of uti. Kidney infection?

Persistent UTI for a few weeks. Last night I woke with nausea and fever, but today I feel fine with mild symptoms of uti. Kidney infection?

Possible upper UTI: History of persistent UTI , nausea and fever suggest the infection may be ascending to the kidney. Please see a doctor for evaluation and treatment. ...Read more

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How long does it usually take an untreated UTI to turn into a kidney infection? Can you have a kidney infection w/o fever, but with ab/flank pain?

How long does it usually take an untreated UTI to turn into a kidney infection? Can you have a kidney infection w/o fever, but with ab/flank pain?

Kidney infection: Generally a Kidney infection is accompanied by a FEVER and some flank pain. Not all UTIs, even untreated will progress to a Kidney infection. There really is not a particular timeline. ...Read more

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How long does it take for ciprofloxacin to work on kidney infection? Wife has been taking every 12 hours for past 8 days & pain still in kidney area. However burn in urine has decreased w/ no fever.

How long does it take for ciprofloxacin to work on kidney infection? Wife has been taking every 12 hours for past 8 days & pain still in kidney area.  However burn in urine has decreased w/ no fever.

Kidney Inflammation : For pyelonephritis a 14 day course of antibiotics should get rid of the infection. However, kidney swelling can cause ongoing discomfort. Like a bruise after trauma, it will take time for the inflammation to go away; in the meantime, increase h2o, reduce caffeine/alcohol intake and avoid spicy/acidic foods to reduce irritation. Use nsaids and see md if not better when antibiotics are done. ...Read more

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