Health September 24, 2024 3:26 pm What is Parkinson's disease? Parkinson’s disease is a progressive movement disorder of the nervous system that weakens nerve cells and leads to symptoms, including problems with movement, tremor, stiffness and impaired balance. US & World Videos 3:02 Americans caught in Lebanon escalation try to take shelter or flee 1:39 George Clooney and Amal Clooney reveal their twins' favorite hobbies 1:49 Death toll for Hurricane Helene hits 183 1:33 Trump ‘resorted to crimes' after losing 2020 election, new court filing says 1:13 WATCH: Navy father surprises daughter at homecoming game