Symptoms of hyperthyroidism involve multiple systems and mainly include hypermetabolic syndrome, irritability and anxiety, agitation, palpitations, arrhythmia, wasting, hyperphagia, diarrhea, progressive muscle weakness, proptosis, and atypical symptoms. 1. Hypermetabolic syndrome: the body’s metabolism is accelerated, showing symptoms such as fatigue and weakness, excessive sweating and low fever. 2. Psychoneurological manifestations: irritability and anxiety, agitation, poor concentration, tremor of hands, etc. 3. Digestive system: emaciation, hyperphagia, diarrhea, loose stools, etc. 4. Cardiovascular system manifestations: blood pressure manifested by increased systolic blood pressure, decreased diastolic blood pressure, increased pulse pressure, and there may be palpitations, arrhythmia and other manifestations. 5. Skeletal muscle system: mainly involving the proximal muscle group, progressive muscle weakness, which may be accompanied by muscle atrophy. 6. Ocular symptoms: protruding eyes, widening of eye lobes, and gaze. 7. Atypical symptoms: apathetic hyperthyroidism is mostly seen in the elderly, with atypical symptoms of hyperthyroidism, heavy systemic symptoms, obvious emaciation, which may be manifested as loss of appetite, fear of cold, dry skin, neurological depression and so on. Patients with hyperthyroidism should go to the hospital in time, and standardize the treatment under the guidance of the doctor.