Site of lesion - Frontal lobe
Bladder sensation - Present
Bladder evacuation - Sudden
Bladder distension - May or may not be present
Bladder capacity - Variable
Bladder control - Lost
(initiation & Inhibition)
Urine stream -Normal
Residual Urine - Nil
Urine volume with each evacuation -May be small or large
Realization of having passed urine -Absent
The voluntary inhibitory control is abolished.Hence the patient urinates in inappropriate places without realising that he has done so
e.g. frontal lobe lesions, mental retardation, dementia, cerebral palsy.
