Parkinson’s<\/span><\/strong> is a progressive disease of the nervous system that causes involuntary movements, such as tremors, stiffness and difficulty with balance and coordination. \u00a0Sometimes, it starts with a barely noticeable tremor in only one hand.\u00a0<\/span><\/p>\n<\/div>\n The most prominent signs and symptoms<\/strong><\/span> of <\/span>\u00a0Parkinson’s disease occur when nerve cells in the basal ganglia, an area of the brain that controls movement, deteriorate and\/or die.<\/span><\/p>\n<\/div>\n<\/div>