Medical Definition of stress incontinence
: involuntary leakage of urine from the bladder accompanying physical activity (as in laughing, coughing, sneezing, or physical exercise) which places increased pressure on the abdomen <… stress incontinence, is the loss of a little urine with a cough or a sneeze; as the condition progresses, any movement that increases pressure in the abdomen—such as bending over—may cause leakage.—Women's Health, Summer 1998>—compare urge incontinence
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