Ronstadt now uses poles to walk on uneven ground and a wheelchair when traveling, the AARP story said.
The U.S. National Institute of Neurological Disorders and Stroke says Parkinson's disease is part of a group of conditions called motor system disorders that are caused by the loss of certain key brain cells. Typical symptoms include tremors, or trembling in the hands, arms, legs, jaw, and face; stiffness of the limbs and trunk; slowness of movement; and problems with balance and coordination. As symptoms become more severe, some patients may have trouble with walking, talking or other simple tasks. The disease usually affects people 50 and older.
There's no cure for Parkinson's, but a variety of medications can provide significant relief from the symptoms, according to the institute.
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