16+ What Causes Weak Bladder Muscles US . Overactive bladder is a combination of symptoms that can cause you to need to urinate more frequently, have more urgency, experience incontinence (leakage) and a need to. Coffee has the biggest effect, so stop drinking it or switch to decaffeinated. Urinary Incontinence In Women Symptoms Causes Treatment from images.medicinenet.com Just sqeeze/contract all the muscles around your bottom and crotch area as though you are trying to hold in a wee. Sometimes a weak or overactive bladder, which is marked by a significantly increased urge to urinate, isn't caused by an infection at all and is either caused or this is said to strengthen the bladder control muscles, although many people say it makes them sore at first. Muscle weakness can be a symptom of many chronic conditions and acute infections. Overactive bladder is primarily a problem of the nerv