Doctors who treat movement disorders include neurologists, neurosurgeons and other physicians who specialize in conditions of the brain and nervous system, according to Mayo Clinic. These specialists tackle movement disorders such as Parkinson's disease, essential tremor, dystonia, Tourette's syndrome and ataxia.
Movement disorders can affect various parts of the nervous system, causing patients to have abnormal or limited movements, which may be voluntary or involuntary, Mayo Clinic states. In ataxia, which affects the cerebellum, sufferers have difficulty performing voluntary movements such walking, moving the eyes or swallowing. Parkinson's disease causes neurons in the brain to gradually deteriorate, resulting in an inability to control body movements, as stated by WebMD. The condition causes muscle stiffness that may result in infrequent blinking, a lack or facial expression or a monotonous voice.