What is Normal Pressure Hydrocephalus (NPH)?
NPH is a clinical syndrome that is characterized by gait apraxia (a disorder of voluntary movement while walking), incontinence (lack of bladder control) and dementia (deterioration of intellectual faculties). Although the cause of NPH is not known in most cases, some patients with NPH have a history of closed head injury or subarachnoid hemorrhage. In all NPH cases, enlarged ventricles are seen in the context of minimal atrophy of the brain. Therefore, the increase in ventricle size is not due to tissue loss, but rather due to changes in cerebral spinal fluid (CSF).
