Uncontrolled hand tremor need to consider the following diseases: 1, Parkinson’s disease, which is the most common hand tremor disease, often manifested as a static tremor, patients in the hand placed in the immobility of the tremor is more pronounced, the symptoms of the movement to reduce the symptoms of the symptoms after sleep, often accompanied by muscle tonus and motor retardation. 2, idiopathic tremor, also known as the primary tremor, the patient is often no other clinical symptoms in addition to hand tremor, more than half of the patients may have a family history. In addition to hand tremor, patients often do not have any other clinical symptoms, more than half of the patients may have a family history, some patients will reduce or disappear after drinking alcohol, and the symptoms will be significantly aggravated by emotional excitement. 3, other pathologic tremor, the most common in the young people with hyperthyroidism, the level of thyroid hormone is obviously elevated, the sympathetic excitability increases, resulting in the distal upper limb is prone to tremor, this kind of tremor is generally postural This kind of tremor is usually postural tremor, which is most obvious when the hand is stressed or posed in a certain position.