Hyperthyroidism is the short form of hyperthyroidism, and this disease can cause several systems of the body to be affected. Men suffering from this disease do not have the most obvious symptoms, and may have the following symptoms. 1. Hypermetabolic syndrome: patients may experience symptoms such as heat intolerance, excessive sweating, fatigue, and weight loss. 2. Mental system: such as nervousness and insomnia, hyperactivity, inattention and agitation. 3. Cardiovascular system: such as tachycardia, palpitations (rapid heartbeat, often accompanied by panic). Especially tachycardia, which is mostly persistent and only decreases during rest and sleep. 4. Digestive system: such as hyperphagia, or anorexia, as well as loose stools and increased frequency of bowel movements. 5. Reproductive system: men may have symptoms such as impotence. 6. Other: such as muscle weakness. Men with this disease have a variety of clinical symptoms. Except for the symptoms of the reproductive system, other symptoms are basically the same as those of female patients. If the above symptoms occur, it is recommended to consult a doctor for timely examination and targeted treatment.