<P> It is typically due to a bacterial infection , most commonly Escherichia coli . Risk factors include sexual intercourse , prior urinary tract infections , diabetes , structural problems of the urinary tract , and spermicide use . The mechanism of infection is usually spread up the urinary tract . Less often infection occurs through the bloodstream . Diagnosis is typically based on symptoms and supported by urinalysis . If there is no improvement with treatment , medical imaging may be recommended . </P>
<P> It is typically due to a bacterial infection , most commonly Escherichia coli . Risk factors include sexual intercourse , prior urinary tract infections , diabetes , structural problems of the urinary tract , and spermicide use . The mechanism of infection is usually spread up the urinary tract . Less often infection occurs through the bloodstream . Diagnosis is typically based on symptoms and supported by urinalysis . If there is no improvement with treatment , medical imaging may be recommended . </P>
pyelonephritis is usually caused by which type of organism
pyelonephritis is usually caused by which type of organism
bacterial infection , most commonly Escherichia coli
bacterial infection , most commonly Escherichia coli