What causes hyperthyroidism, and what are its symptoms?

Aug 24, 2022 Source: Cainiu Health
Disease description:

I've been feeling irritable lately, and I've also experienced a noticeable weight loss. I suspect it might be caused by hyperthyroidism. What causes hyperthyroidism, and what are its symptoms?

Doctor's answer (1)
Dr. Pan Yongyuan
Hyperthyroidism may result from improper diet, such as consuming foods high in iodine, or may be caused by thyroid tumors. Additionally, it could also be due to genetic factors or excessive mental stress. Patients may experience symptoms including heat intolerance, palpitations, fatigue, irritability, weight loss, and fever.