I have had typical PD symptoms for about 2 years (balance, tremors, gait, etc.). My third Neuro insisted that my medications could be causing my symptoms and that therefore I may have Parkinsonism which causes identical symptoms as PD but are a result of other factors. In my case he believed my symptoms may be caused by overmedication and suggested I stop taking aripiprazole. After 6 months off the antipsychotic my off times have been eliminated and my PD symptoms are minimal. Although I had been taking sinemet 25/100 three times a day, we are weaning me off it in six months to see my reaction. So far I am down to 2 a day and no PD symptoms. Obviously, I'm doing this under medical supervision.