The act of voiding URINE through the URETHRA. Abnormalities in urination such as di?culty in starting or stopping, greater than normal frequency, unusually small amounts of urine passed, a constant feeling of wanting to urinate or a sudden hard-to-control urge to urinate are all symptoms that suggest possible disorders of the urinary tract which merit investigation.
(micturition) n. the periodic discharge of urine from the bladder through the urethra. It is initiated by voluntary relaxation of the sphincter muscle below the bladder and maintained by reflex contraction of the muscles of the bladder wall.
Also known as urinary “frequency”, the passing of urine more often than the average of 4–6 times daily. Causes of frequent urination include excessive production of urine (see urination, excessive), cystitis, anxiety, stones in the bladder (see calculus, urinary tract), enlargement of the prostate gland (see prostate, enlarged) in men, and, rarely, a bladder tumour. Some people who are suffering from kidney failure pass urine more frequently, especially during the night. Treatment of frequent urination is always of the underlying cause.... urination, frequent
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