Multiple system atrophy is an illness that affects the central and autonomic nervous system. The autonomic nervous system is a part of the brain system that controls the heart, belly, lungs, and bladder. This syndrome comes on slowly. Some people with this illness suffer from mild signs like loss of sweating or hard stools. Others may have more severe signs like trouble with walking, breathing, or loss of bladder control. The signs most often get worse with time.
