Overactive bladder is a very common old-age lower urinary tract disease.The main pathophysiology is involuntary detrusor muscle contracture during bladder filling phase.

• 摘要过动膀胱症为一常见于中老年人的下泌尿道疾病，其主要的病理生理原因为膀胱在充填期迫尿肌不自主的收缩。