"Folks,Terry Pratchett has Alzheimer's. Awful for anyone it seems particularly cruel for someone who lives by words and their intellect.
I would have liked to keep this one quiet for a little while, but because of upcoming conventions and of course the need to keep my publishers informed, it seems to me unfair to withhold the news. I have been diagnosed with a very rare form of early onset Alzheimer's, which lay behind this year's phantom "stroke"."
Via Selina's Universe.