13-year-old girl hand shaking may be psychological factors, muscle fatigue spasm, hyperthyroidism and other causes. 1. Psychological factors: If a 13-year-old girl is over-excited or mentally over-stressed, it may be easy to cause hand shaking. 2. Muscle fatigue spasms: If a 13-year-old girl stays in the same position for a long time or carries heavy objects, it can lead to muscle fatigue and muscle fatigue spasms, which can be manifested as hand tremors. 3. Hyperthyroidism: hyperthyroidism is caused by excessive secretion of thyroid hormones, which can lead to accelerated metabolism, sympathetic nerve excitation, which leads to the 13-year-old girl’s hand shaking, which may be accompanied by palpitations (heartbeat accelerated, often accompanied by panic), weight loss, frequent sweating, temper tantrums and other symptoms. 13-year-old girl hand shaking, there may also be other reasons, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.