Young people often have hand tremors, the possible causes are as follows: 1, idiopathic tremor: this is a kind of tremor related to genetic factors, mainly manifested as tremors in the limbs, jaws, tongue and other parts of the body, no increase in muscle tone, no motor retardation. The hand tremor will gradually increase with age, and in the elderly, the tremor will expand. 2, hyperthyroidism: clinically there are many young people with hand tremors, found to be caused by hyperthyroidism by checking the thyroid function, and need to take anti-hyperthyroidism drugs through treatment. After the thyroid function is normal, the hand tremor can also be relieved and disappear. 3, acute anxiety attack: patients can appear hand trembling.