Hyperthyroidism is known as hyperthyroidism. Teenagers suffering from hyperthyroidism may affect their development and prompt treatment is recommended. Hyperthyroidism is a symptom caused by the overproduction of thyroid hormones in the body, which will lead to hypermetabolism, which can be manifested as irritability and anxiety, agitation, palpitations, arrhythmia, weight loss, hyperphagia, diarrhea, progressive muscle weakness, and protruding eyes. In adolescents, hyperthyroidism affects the secretion of growth hormone as well as the absorption of nutrients, which may affect development. It is recommended that patients with hyperthyroidism go to the hospital in time and follow the doctor’s instructions for treatment to avoid delays.