"Parkinson’s disease was not always known by this name. Almost 200 years ago in 1817, when English doctor James Parkinson first described the disease, he called it Shaking Palsy. But Parkinson’s disease affects much more than just movement. There are good reasons for why we think of this illness as largely affecting movement. Consider the actor Michael J. Fox and boxer Muhammad Ali. We know that they have Parkinson’s because of the obvious shaking in their limbs. This shaking or tremor is known as one of the four cardinal motor symptoms of Parkinson’s, but there’s much more to the illness."

Photo Credit: John Stango / WIKIMEDIA COMMONS