I found this article from pscpartners.org which is a support, research, and all around good website for those suffering with PSC.
Primary Sclerosing Cholangitis may have caused the death of Beethoven
Läkartidningen, vol. 103, nr 35, s. 2494-2496.
Stockholm: Läkartidningen Förlag AB
I heard it was a conspiracy. Beethoven was the man who knew too many notes.