MS and Parkinson’s have different causes. They usually start to affect you at different ages, too.
MS often affects people between ages 20 and 50, but children get it, too. Parkinson’s usually starts at age 60 or older, but some younger adults get it.
MS is an autoimmune disease. That means your body’s immune system goes haywire for some reason.
In Parkinson’s, certain brain cells start to die off. Your brain makes less and less of a chemical called dopamine that helps control your movement. As your levels dip, you lose more of this control.