[header] How to recognize the signs of parkinson's disease [title] Notice any shaking or twitching. [step] When you think of parkinson's disease, the first thing to come to mind may be tremors. These can occur anywhere on the body: a shaking finger or leg, a twitching eye, a trembling lip or chin, etc. 
Note that some shaking and twitching can be perfectly normal-for example, after strenuous exercise or after an injury. Some medications can also cause tremors, so ask your doctor about the medications you are currently taking.