my grandfather was diagnosed with parkinsons 2 yrs ago and he has been doing as well as expected. he has a slight tremor with his hands and shuffles alittle when he walks but the meds seem to be working. now last weekend on friday grandma said that grandpa was acting weird. he couldn't remember how to us the cell phone, he seemed confused , he almost went off the road while driving. when grandma asked the dr about it he said "well he seems fine now" is this symptoms of parkinsons? anyone heard of something like this happening???