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A to Z: Pyelonephritis

A to Z: Pyelonephritis

Pyelonephritis (pie-low-ne-FRY-tis) is an infection in one or both kidneys. Pyelonephritis happens when urine (pee) infected with bacteria flows up from the bladder or when an infection in the bloodstream reaches the kidneys.

More to Know

A kidney infection like pyelonephritis is similar to a bladder infection, as they are both urinary tract infections (UTIs). However, children are usually sicker with fever, back pain, or vomiting with pyelonephritis.

Keep in Mind

Pyelonephritis requires medical attention. A doctor will ask for a urine sample, and may order other tests, to determine the cause and best treatment. It's important to treat kidney infections with a full course of antibiotics. Untreated and repeat infections can lead to high blood pressure and kidney disease in adulthood.

All A to Z dictionary entries are regularly reviewed by KidsHealth medical experts.

Related Articles
P    Kidneys and Urinary Tract
T    Kidneys and Urinary Tract
K    Movie: Urinary System
P    Recurrent Urinary Tract Infections and Related Conditions
P    Urinary Tract Infections
T    Urinary Tract Infections
K    Urinary Tract Infections (UTIs)
P    Urine Tests
K    Your Kidneys
K    Your Urinary System
Note: All information is for educational purposes only. For specific medical advice, diagnoses, and treatment, consult your doctor.
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