The Rev. Jesse Jackson is in the hospital with a rare neurological disorder. Jackson's Chicago-based civil rights organization says the 84-year-old has progressive supranuclear palsy and is under observation. Jackson has suffered from symptoms consistent with Parkinson's disease and disclosed a diagnosis in 2017. But during a Mayo Clinic visit in April, doctors confirmed a diagnosis of PSP, which can have similar symptoms to Parkinson's. He has continued to make public appearances including at last year's Democratic National Convention. He's been using a wheelchair and family members say he can no longer speak.