The Movement Disorder division of Neurology is currently concluding a research study of "Disabling dyskinesias in Parkinson's disease with motor fluctuations" and another of "Psychosis in Parkinson's disease." We have ongoing enrollment for "Droxydopa for orthostatic hypotension in Parkinsonian disorders" and "IvIg therapy for Multi-System Atrophy syndrome." We hope to initiate a trial soon for a new botulinum toxin in cervical dystonia and are collaborating with Neurosurgery on several studies of DBS programming parameters and olfaction, mood and affect recognition, and cognition.