What is Kidney Infection (pyelonephritis)?
Pyelonephritis most often occurs as a result of urinary tract infection , particularly when there is occasional or persistent backflow of urine from the bladder into the ureters or an area called the kidney pelvis. See: Vesicoureteric reflux Pyelonephritis can be sudden (acute) or long-term (chronic). Acute uncomplicated pyelonephritis is the sudden development of kidney inflammation. Chronic pyelonephritis is a long-standing infection that does not go away. Pyelonephritis occurs mu…
