I *certainly* agree with Ernie; it would seem logical that perhaps some PD drugs contain chemicals which work on the brain to make one *feel* better (if that can be called "responding") BUT if that's the operative test for a PD diagnosis, it's not very accurate! What if those drugs simply mask symptoms of the real disorder for years and years? I hope PET Scans become more affordable and more used, if they are the more accurate diagnostic tool! It sounds as if they are. Linda B. (for Ed 49/dx 3) Columbia, MO ****************** On Fri, 1 Nov 1996, Ernie Peters wrote: > John, > > Thanks for your account of how your problem was solved and congratualations > on the recovery. Your comments are all very sound. > > I believe that one of the most important factors in the search for answers > and a cure for PD is the development of better tools and procedures to > accurately diagnose/eliminate it. The old, "If it responds to Sinemet it > must be PD" maxim may soon be proved unreliable. > > Best of luck > > > > Ernie Peters ([log in to unmask]) >