On Tuesday, former Packers football player, Brett Favre announced he suffers from Parkinson’s Disease. Parkinson’s Disease is a brain disorder that impacts movement and speech. It results in uncontrollable movement and tremors.

A neurologist who treats and studies Parkinson's has a personal connection to the disease: Her father-in-law, who played in the NFL, was later diagnosed with the condition.

A CHI Health neurologist who treats and studies Parkinson's has a personal connection to the disease: Her father-in-law, who played in the NFL, was later diagnosed with the condition.