We often see some people’s hands shaking at a young age, and it is common for older people to have shaking hands. So, what exactly can cause hand trembling in young people? 1, physiological hand tremor: generally small in amplitude and fast, mostly at rest, is a small, fast, irregular shaking. Physiological hand tremor often occurs under mental tension, fear, emotional excitement, severe pain and extreme fatigue, and once the above causes of hand tremor are eliminated, the hand tremor disappears. In addition, after drinking alcohol, poisoning, the body minerals and vitamins are destroyed by alcohol, will also occur hand trembling condition. As long as the adequate amount of magnesium, calcium, VB, VC can be adjusted over. Young people mostly see such hand tremors. 2, pathological hand tremor: medically known as “tremor”, for many reasons, refers to the hand trembling at random, often permanent. (1) hyperthyroidism: hyperthyroidism is a disease caused by excessive secretion of thyroid hormones by the thyroid gland, and is most common in young women, but is a disease that is easily misdiagnosed. The four common symptoms of hyperthyroidism are panic attacks, shaking hands, fear of heat and sweating, excessive food and hunger, and weight loss. In addition to the four major symptoms, hyperthyroidism patients are also prone to agitation, mental allergies, insomnia and nervousness, anxiety and irritability, suspicion and difficulty concentrating. The diagnosis should be confirmed by thyroid ultrasound and thyroid hormone test in surgery or nail mammography. (2) Cervical spondylosis: sometimes hand tremors may occur, but they are usually combined with stiffness in the neck and collar, limited movement, soreness and pain, and numbness in the arms. Cervical spine MRI examination and electromyography are required. (3) Myocarditis: Acute myocarditis or chronic myocarditis due to influenza during adolescence and incomplete treatment may also cause panic and hand tremors, dizziness and weakness, which require an electrocardiogram and myocardial enzyme profile to confirm the diagnosis. (4) Idiopathic tremor: It is a disease of declining brain capacity, mostly occurring in people over 50 years old. It is an autosomal dominant disorder, the most common extrapyramidal disorder, and the most common tremor disorder. It is secondarily associated with environmental factors and genetic susceptibility. A cranial MRI is required. (5) Parkinson’s disease: It is a resting hand tremor, which mostly occurs in elderly people over 50 years old. It is a hand tremor that occurs when the muscles are completely relaxed, i.e., in a quiet state. This kind of hand tremor can disappear when sleeping, and the speed of hand tremor is 4-6 times/second, which is more regular. MRI of the head and electromyography are required. (6) Other causes: upper limb nerve disease and injury, brain tissue disease (such as dementia, cerebral arteriosclerosis, midbrain or cerebellar flat lesions and brain injury, etc.) and drug-induced hand tremors.