MA Williams is an unpaid volunteer member of the Medical Advisory Board of the Hydrocephalus Association. Idiopathic normal pressure hydrocephalus (INPH) is characterized by gait disturbance ...

A flow-limiting valve operates by limiting CSF drainage under normal pressure conditions, but will switch to allow a higher flow rate in response to increased ICP. However, despite all of the ...

But it turns out he has a rare - and often undiagnosed - condition called normal pressure hydrocephalus. The good news is it's treatable. A few years ago, John Searle thought his life as he knew ...