6-Incontinence
There is smooth muscle in the urinary bladder as well, and this muscle is responsible for contracting and releasing in order to control your urinary function. In patients with Parkinson’s disease, the urinary bladder eventually becomes overactive and the smooth muscle starts contracting and relaxing unexpectedly. Since this is not skeletal muscle and it is totally involuntary, it is impossible to stop this outcome, and its consequence. This is why patients with an advanced Parkinson’s disease, and especially women, often experience incontinence.