I was recently diagnosed with Parkinsonism, and started taking Sinemet 3 weeks ago, but I am not seeing much in improvement. I will be seeing my local neurologist in a few days again to see what he thinks. He is excellent, and I have been seeing him for several years, ever since I had Chiari Malformation and Syringomyelia. I am now wondering if those conditions are a reason why I have developed Parkinsonism, since it is an umbella condition with other conditions, including PD, under it.