MedlinePlus, National Library of Medicine, National Institutes of Health, U.S. Department of Health & Human Services, provides a good place to start for an overview and links to further information on Parkinson’s Disease.
Parkinson’s Disease (also sometimes called Shaking palsy) usually begins around age 60, but can start earlier. It involves a disorder of nerve cells in a part of the brain that controls muscle movement – hence, the common symptoms of trembling, stiffness of arms, legs and trunk, slowness of movement, and poor balance and coordination, all of which become progressively worse with time.
