Frontotemporal dementia

frontotemporal dementia — a little-known, poorly understood and frequently misdiagnosed group of brain diseases that eat away at personality and language. Although it was first recognized more than 100 years ago, there is still no cure or treatment, and patients survive an average of only eight years after the diagnosis. … it strikes younger people, progresses faster and, unlike Alzheimer’s, does not attack memory at first but begins with silence, apathy or bizarre personality changes. It is thought to afflict at least 50,000 to 60,000 people in the United States.