With NDO, there is overactivity of the bladder wall muscle, which normally relaxes to allow storage of urine. The bladder wall muscle overactivity results in sporadic bladder muscle contraction, which increases pressure in the bladder and decreases the volume of urine the bladder can hold.
The condition known as NDO (non-obstructive dysuria) involves a problem with the bladder's ability to relax properly, causing it to contract irregularly and leading to increased pressure within the bladder and reduced storage capacity.