Perhaps. She steadfastly denied that she suffered from the disease: http://www.imdb.com/name/nm0000031/bio Quote: "Now to squash a rumor. No, I don't have Parkinson's." However, tremors were quite...
She had a very common medical condition call benign essential tremor. You can read more about it here http://www.cumc.columbia.edu/news/in-vivo/Vol2_Iss02_jan29_03/index.html
Katharine Hepburn (1907-2003) was a 12-time Oscar-nominated, and four-time Oscar winner as well as a bestselling author. Her two Memoirs, "Me" and "The Making of the African Queen" were huge sucesses.