AlzheimersNotes.com 
Fantasy author Terry Pratchett let the world know he has been diagnosed with a rare form of early-onset Alzheimer’s resulting from a mini stroke.  Pratchett wrote to his fans:
“I would have liked to keep this one quiet for a little while, but because of upcoming conventions and the need to keep my publishers informed, it seems unfair to withhold the news.”
Check here for more information about Terry Pratchett, his work and his life.