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Doctor insights on: How Long Does It Take A Urinary Tract Infection To Reach The Kidneys

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How long does it take a urinary tract infection to reach the kidneys?

How long does it take a urinary tract infection to reach the kidneys?

Instantly ->few days: Bacteria can reach the kidneys almost instantly if the subject has vesico-ureteral reflux (urine backs up from bladder), or can take hours to days depending upon the bacteria. Some bacteria have tiny hair like projections (cilia) and can crawl through bladder vales and work their way up to the kidney. Sign of infection reaching the kidneys is when you develop back or flank pain.

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Kidney (Definition)

The kidneys are paired organs that lie on either side of the vertebral column. Part of their critical functions include the excretion of urine and removal of nitrogenous wastes products from the blood. They regulate acid-base, electrolyte, fluid balance and blood pressure. Through hormonal signals, the kidneys control the ...Read more


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Could you tell me how long it takes your urinary tract infection to reach the kidneys?

Could you tell me how long it takes your urinary tract infection to reach the kidneys?

Kidney infection: Kidney infection (pyelonephritis) generally causes fever, chills and very significant flank pain. One generally feels "sick". Bladder infection (cystitis) rarely causes systemic symptoms. Discomfort in the pelvic area and irritative voiding symptoms are typical. In general, a bladder infection should not ascend to the kidneys unless there is an anatomic abnormality with the ureters. (reflux).

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Will my kidneys hurt when I have a urinary tract infection?

Will my kidneys hurt when I have a urinary tract infection?

Sometimes: Your kidneys will not hurt with an uncomplicated urinary tract infection, which just effects the bladder. But if the infection backs up into the kidneys and infects the kidney, this is called pyelonephritis, which usually causes the kidneys to hurt. This is a more serious infection, and requires a longer course of antibiotics.

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What to do if I have some pain in my kidneys and I also have a urinary tract infection. Is that what causing it?

What to do if I have some pain in my kidneys and I also have a urinary tract infection. Is that what causing it?

Need evaluation..: If you have a uti, and now have developed kidney pain, then you might have a kidney infection +/- kidney stones. You need to be seen immediately because sometimes this requires hospitalization to treat.

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Can a urinary tract infection affect your kidneys?

Can a urinary tract infection affect your kidneys?

Yes: Bladder infection can reach the kidneys if bladder (vesico-ureteral) reflux is present, also some bacteria have little arm like projections (fimbriae) and can crawl though the bladder valve and up ureters to kidney. Bacterial infection in the kidney is pyelonephritis which can make suject very ill & cause plenty of damage or if untreated even destroy the kidney. Thus all utis should be treated.

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I want to know what is the difference in symptoms of urinary tract infection and kidney stones?

I want to know what is the difference in symptoms of urinary tract infection and kidney stones?

Can be similar: Flank pain, blood in the urine, frequent urination and pain when urinating can all be cause by both of these problems. Typically, however, back, flank or groin pain predominates with kidney stones and pain during urination dominates in uti.

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Can you have a kidney infection without having a urinary tract infection?

Can you have a kidney infection without having a urinary tract infection?

Certainly: An infected kidney, such as from a backed up stone, perinephric abscess, and infected cyst can cause a kindney infection without symptoms of uti. The actual urinalysis may also be completely normal.

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How do you know if you have a kidney infection or a urinary tract infection?

How do you know if you have a kidney infection or a urinary tract infection?

UTI: Kidney infections are more serious and cause fever, chills, flank pain and cloudy urine classically. Bladder infections usually cause urinary frequency and burning and at times there can be blood in the urine. Cultures are done to document infection and identify the offending organism.

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What are the differences between a urinary tract infection and a kidney infection? What symptoms are different?

What are the differences between a urinary tract infection and a kidney infection? What symptoms are different?

UTI: "uti" includes all types of infections in the urinary tract. Cystitis is specifically a term describing inflammation of the bladder. Most often cystitis, although quit irritating, does not cause systemic symptoms such as fever, body aches etc. Pyelonephritis (also a uti) on the other hand is an infection of the kidney causing significant systemic symptoms.

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Do you think I should be worried if I have lower back pain with a urinary tract infection?

Do you think I should be worried if I have lower back pain with a urinary tract infection?

Probably not: Probably not but if this continues of worsens after treatment or if you develop fever, see your doctor immediately.

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Is upper back pain or lower back pain involved with a urinary tract infection?

Both: Pain in the upper part of your lumbar spine, just at the level where ribs begin is possible. Lower back pain is more common.

Dr. Louis Gallia
9 Doctors shared insights

Infection (Definition)

Infections are invasions of some other organism (fungus, bacteria, parasite) or viruses into places where they do not belong. For instance, we have normal gut bacteria that live within us without causing problems; however, when those penetrate the bowel wall and enter the bloodstream, ...Read more


Dr. Barbara Lavi
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Urinary Tract Infection (Definition)

A urinary tract infection, also known as an UTI, may involve the kidney, ureter, bladder, or urethra. A common cause is an intestinal bacteria, E. coli. Common symptoms include a frequent urge to urinate, and pain or burning when urinating. Antibiotics are typically ...Read more