Sudden hand trembling is mainly seen in the following cases: 1. Patients with anxiety, if they are under mental stimulation or after a major event, it is easy to cause an acute attack of anxiety and a sudden increase in trembling of the hands or limbs. 2. Sudden hand trembling is very strong for patients with idiopathic tremor, when they are mentally tense or when they are holding something, they will suddenly have strong hand trembling. 3, Patients with Parkinson’s disease, if they are mentally stressed or sleep deprived, are likely to have severe hand tremors, accompanied by a delay in action. 3. Patients who suddenly have severe hand tremors and have previous hypertension or diabetes are considered to have acute cerebrovascular disease, such as cerebral lobe infarction or hemorrhage, and need to go to the hospital for a cranial magnetic resonance examination.