Hyperthyroidism generally refers to hyperthyroidism, hyperthyroidism causes hypermetabolism, which can involve the nervous system, digestive system, cardiovascular system, reproductive system, etc. Women with hyperthyroidism can have scanty menstruation and amenorrhea. 1. Nervous system: inattentive, easily agitated, irritable, may have anxiety, insomnia and other manifestations. 2. Digestive system: manifested as overeating, easy to hunger and increased frequency of stools, also manifested as diarrhea, abdominal pain, etc.. 3. Cardiovascular system: it often manifests as accelerated heart rate, high blood pressure, etc., and further development may include heart enlargement and heart failure. 4. Reproductive system: scanty menstruation or even amenorrhea in women; loss of libido and impotence in men. It is recommended to consult a doctor for the above symptoms.