Tremor in both hands can occur at all ages, mostly in middle-aged and older adults over 40 years of age, and it is also thought that adolescents are another peak of onset. Daily activities such as writing, pouring water, and eating can aggravate the tremor, and most patients experience a reduction in symptoms after drinking alcohol. As the disease progresses, the frequency of tremor decreases while the amplitude increases, leading to more severe functional impairment. Tremor involvement can gradually increase, with head tremor generally appearing several years after upper extremity involvement, and trunk and lower extremity involvement usually occurring most recently. Idiopathic tremor should be considered as a possibility based on the frequent occurrence of postural and/or motor tremor, its reduction after alcohol consumption, a family history, and the absence of other neurological signs and symptoms. Diagnostic tests can be made based on the clinical manifestations, combined with the type of etiology. 1, with other neurological signs, or a history of trauma shortly before the onset of tremor. 2, Physiological hyperactive tremor caused by objects, anxiety, depression, hyperthyroidism, etc. 3.History of psychogenic (psychogenic) tremor. 4, sudden onset or segmental progression. 5.Primary erect tremor. 6, Position-specific or target-specific tremor only, including occupational tremor and primary writing tremor. 7, Speech, tongue, chin or leg tremor only. Grades of tremor: Grade I: very mild tremor (not easily detected). Grade II: easily detectable amplitude of less than 2 cm without disabling tremor. Grade III: Obvious amplitude of 2-4 cm partially disabling tremor. Grade IV: Severe disabling tremor with an amplitude of more than 4 cm.