In contrast, in younger women, bladder infection occurs 30 times as often as in men. Sexual intercourse predisposes to infection in this age group.
Prostate disease is the a predisposer in the elderly.
As a dammed up stream causes a lake and grows algae, so a urinary flow slowed by a large prostate grows bacteria. A relaxed pelvic floor from frequent childbirth can also slow the urinary stream and encourage bacterial growth. Chronic immobility and stagnant urine predispose to urinary tract infections. Relapse can occur, but recurrence may be due to an incompletely treated first infection. There is evidence of bladder irritation with frequent hourly burning urination or urgency to void, especially at night and maybe lower abdominal discomfort.