Frontotemporal dementia affects part of brain responsible for personality , memory , reasoning . `` And when he had bad days , they were very bad . '' 250,000 people in the United States have it , representing 10-20 percent of dementia cases . Comment: Hope on the horizon as researchers target the proteins that accumulate in the brain cells .
Frontotemporal dementia affects part of brain responsible for personality , memory , reasoning . 250,000 people in the United States have it , representing 10-20 percent of dementia cases . Comment: Hope on the horizon as researchers target the proteins that accumulate in the brain cells .