Dr. van der Linden, My husband has been diagnosed for two and a half years--at the age of 61--and has so far not had tremor. However, he responds very well to sinemet at a moderate to low dose which has not had to be increased for normal functioning. Does the fact that he responds well to anti-Parkinson medication put him in a different category from the non-tremor group you referred to who have a higher chance of dementia? Chris van der Linden wrote: > Dear Brian, > > You are describing the non-tremor form of Parkinson's disease, which starts > at a later age, usually doesn't show any tremor, progressive course with > slowness of movement and gait disturbance, not very effectively respondnding > to anti-Parkinson medciation and frequently requiring high doses of meds. > In addition, a higher chance of dementia in this patient group. >