Frontotemporal Dementia: Devastating, Prevalent and Little Understood

Bill Whitaker reports on FTD, a devastating illness and the most common form of dementia for Americans under the age of 60.

This is a story about the cruelest disease you have never heard of. It's called frontotemporal dementia — or FTD. And given the devastating toll it takes on its victims and their families, it ought to be much better known than it is.