Final answer:
Shy-Drager syndrome, or multiple system atrophy (MSA), is a neurodegenerative disorder that affects the autonomic nervous system. It shares some symptoms with Parkinson's disease but also involves dysfunction of the autonomic nervous system.
Step-by-step explanation:
Shy-Drager syndrome, also known as multiple system atrophy (MSA), is a neurodegenerative disorder of the autonomic nervous system. It is characterized by the degeneration of certain brain regions, leading to a variety of symptoms that include problems with movement, dysautonomia, and motor dysfunction. MSA shares some similarities with Parkinson's disease, such as muscle rigidity and slowness of movement, but it also involves dysfunction of the autonomic nervous system.