O al menos una forma rara de la enfermedad. Cortipego de discworldnews:

Folks,

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”.

Es una lástima, la verdad. Aunque dice que le queda mucho por delante y que habrá más libros… no deja de ser algo descorazonador.