Multiple system atrophy – Wikipedia

Multiple system atrophy (MSA) is a rare neurodegenerative disorder characterized by autonomic dysfunction, tremors, slow movement, muscle rigidity, and postural instability (collectively known as parkinsonism) due to dysfunction of the basal ganglia, and ataxia.This is caused by progressive degeneration of neurons in several parts of the brain including the basal ganglia, inferior olivary …

: https://en.wikipedia.org/wiki/Multiple_System_Atrophy