<unk>  <unk>  is a chronic, progressive neurodegenerative movement disorder, which are the result of the loss of dopamine-producing brain cells. The cause of<unk>  is unknown. Many researchers believe that a combination of several factors, such as free radicals, environmental toxins and genetic predisposition, is involved in the development of this disease.<unk>  develops gradually, often starting with a barely noticeable tremor in just one hand. With time going on, patients may show symptoms as rigidity, masked face, slowness of movement (bradykinesia) and impaired balance, even dementia. Meidcal history, physical examination, neurological evaluation and head images may help exclude other diseases that may cause similar symptoms to<unk> . Treatment goal of<unk>  is to relieve the symptoms. The main treatment opinion include medications and surgery. The prognosis varies from person to person. It depends on the start time of treatment, nursing and complications.
Parkinson's disease
Parkinsonism
Pick's disease
Alzheimer's disease
Dementia with Lewy bodies
Progressive supranuclear palsy
Canavan disease
Early-onset Alzheimer's disease