For the past year and a half my mother has been dealing with dementia. Two weeks ago she fell and had a nasty laceration. While in the ER she had a CT of the brain.The Doctor explained that there was more than the normal amount of fluid in her brain. They surmise that this most likely is contributing to the dementia abnormal gait and urinary incontinence. If this is something that occurs why aren't all dementia pt screened for this? Anyway she is scheduled for a spinal tap to see if drainage will help symptoms. Does anyone have any experience with this?