I have been running a Curse of Strahd game for a few months now. In the Curse of Strahd, there is a character in the Town of Vallaki.
His name is Izek, and he has a monstrously deformed arm. His bio only mentions that he woke up with it one day.
I am certain that I read the more detailed origin of this deformity in the book at some point. I have re-read the relevant sections of the book (his character bio in the appendix and the sections regarding this character, chapter on the Town of Vallaki) multiple times trying to find this information without much luck. Short of reading the entire book again from front to back, I'm not sure where to find this information. I can't for the life of me remember where in the book I read this (if anywhere).
Can anyone help me find where this information is in the book, or otherwise confirm that this information isn't in the book, so I can stop going crazy trying to find it?