urinary retention
(YOOR-ih-NAYR-ee reh-TEN-shun)
A condition in which urine cannot empty from the bladder. Urinary retention can be acute and develop very quickly, or it can be chronic and occur over a long time. Signs and symptoms include not being able to urinate, feeling a need to urinate right away, urinating often but in small amounts, leaking urine, and lower abdominal pain or swelling. Urinary retention is usually caused by a blockage or narrowing in the bladder or urethra (tube through which urine leaves the body). This may result from an enlarged prostate, a bulging or sagging bladder, kidney or bladder stones, tumor, infection, or inflammation. Urinary retention may also be caused by nerve problems, weak bladder muscles, surgery, and certain medicines.