"Jesse Jackson’s cause of death has not been confirmed, he had battled Progressive Supranuclear Palsy, a rare neurological disorder. Jackson first revealed he had been diagnosed with Parkinson’s disease in 2017, but last year a spokesperson for Rainbow PUSH Coalition said Jackson was diagnosed with PSP in April 2025. PSP is considered a more serious and faster progressing disorder. Shurer said symptoms progress nearly three times faster than Parkinson’s disease. “What makes PSP different than Parkinson’s disease is it usually doesn’t respond to the Parkinson’s medications,” said Dr. Amy Brown."