A 17-year-old boy presented with recurrent headaches since the age of 7-8. He underwent brain MRI and was initially diagnosed with allergic rhinitis, treated with nasal puncture and traditional Chinese medicine. The headaches were accompanied by vomiting and anorexia, and he was hospitalized due to tachycardia. In the spring of 2017, he was hospitalized five times, treated as if he had myocarditis, and in August 2018, a rapid heart rate induced by a cold led to another hospitalization. He was diagnosed with hyperthyroidism and treated for it. On January 24, 2019, a follow-up examination showed normal thyroid function, and since the diagnosis of hyperthyroidism, his headaches have improved.