Corrections by Jonathan Franzen

I'm reading Corrections by Jonathan Franzen. This is not a book review as I have only begun and am about 50 pages in.

The book is about a family from the Midwest. The Patriarch of the family has Parkinson's Disease, we don't know it yet. The reader just knows that he has a neurological condition and takes meds.

What I appreciate about this author is that he did his research. The symptoms he has mentioned so far are not the usual tremors and balance.

Franzen took the time to mention symptoms that only people with PD e would instantly recognize.