Hand shivering, or hand trembling, is medically called tremor. People are prone to hand tremors when they are highly stressed, fearful, emotionally agitated, in severe pain and extremely tired. After eliminating these triggers, hand tremors will then disappear and usually do not cause other abnormalities. However, hand tremors can also be caused by diseases, such as hyperthyroidism, arrhythmia, idiopathic tremor, Parkinson’s disease, extrapyramidal disease, hepatomegaly, and drug intoxication. For many young people, hand tremors are more common in hyperthyroidism and arrhythmia, while in the elderly, hand tremors caused by Parkinson’s disease or idiopathic tremor are predominant, with examples of hand tremors caused by hyperthyroidism, idiopathic tremor and Parkinson’s disease: 1. 2, idiopathic tremor: idiopathic tremor mainly occurs in middle-aged people, especially in the 30-40 years old age group. The hand tremor of idiopathic tremor is relatively easy to distinguish, that is, usually do not shake, but in public places their own emotional tension and excitement will appear uncontrolled hand shaking, or do a little fine work hand tremor, idiopathic tremor has family heredity; 3, Parkinson’s disease: Parkinson’s disease is quiet when shaking, and shaking will not improve or reduce with mood swings, most Parkinson’s disease patients will also appear abnormal gait , walking inconvenience.