Marjorie, Call me conceited if you will, but some while ago I went and did the 'tests' at the URL you quoted, and according to them I have nothing to worry about! I read up the information on PD and ET at the same site (which was very good) and it was clear that the test overlooked some of the distinctive features for diagnosing and differentiating PD like conditions. I wrote to Abe Lieberman and pointed out what I thought were the inconsistencies. His response was that the tests weren't designed for someone under treatment for PD, so I pointed out that I wasn't under treatment, and they were still innaccurate. Never did get an answer to that one.... The short side of it is, that in my humble, non-medical, little experienced but widely read opinion, the test are misleading and innaccurate. Gosh, I bet that's lit a firebrand somewhere. Alf Adelaide 50 <1 48 -----Original Message----- From: Marjorie L. Moorefield [mailto:[log in to unmask]] Michael, Go to this URL, http://www.parkinson.org/ There are a number of test questionnaires you can fill in there and you will receive an answer. Best of luck to you and your Dad. just me, Marjorie