Multiple system atrophy is a neurodegenerative disease of the central nervous system which is accompanied by signs of autonomic imbalance (orthostatic hypotension, urinary problems, erectile dysfunction), Parkinson's symptoms (movement decreases, limb tremors) and cerebellar ataxia symptoms (grogginess, pronounced incorrectly). It shows signs similar to Parkinson's disease, however, it doesn't show improvement of symptoms by dopaminergic drugs and occurs at any age.