This is a good article about the symptoms of normal pressure hydrocephalus (NPH). Often, NPH is misdiagnosed as progressive supranuclear palsy or Lewy body dementia!
In this case, the sufferer’s cognitive symptoms improved immediately after brain suergery.
Here’s a link to the full article:
Her mother seemed to have classic dementia. Or did she?
By Roni Caryn Rabin
Washington Post
March 2, 2015