Parkinson's disease (PD) is a disorder of the central nervous system. It is not contagious and may appear at any age. But it is uncommon in people younger than 30, and the risk of developing it increases with age. Parkinson’s disease occurs in all parts of the world. Men are affected slightly more often than women.
Here are the major symptoms of Parkinson's disease. It is important to know that not all patients experience the full range of symptoms and in fact, most do not. The person may get