There is no such thing as “10 serious symptoms of hyperthyroidism in men”, the manifestations of hyperthyroidism are variable, and each patient’s manifestations are not exactly the same. When a man’s hyperthyroidism is severe, he will usually have a significantly enlarged thyroid gland, arrhythmia, protruding eyes, sexual dysfunction, sweating, high fever and other manifestations. Symptoms of hyperthyroidism involve multiple systems, mainly including fatigue and weakness, excessive sweating, low-grade fever, irritability and anxiety, agitation, trembling hands, cardiac arrhythmia, lethargy, hyperphagia, diarrhea, protruding eyeballs, enlarged thyroid gland and other manifestations, and male patients may have impotence and other manifestations of sexual dysfunction. When hyperthyroidism is severe, it may lead to manifestations such as muscle atrophy, obvious emaciation, vision loss and even blindness. Even thyroid crisis may occur, manifested by high fever, sweating, tachycardia, delirium, nausea, vomiting, diarrhea, and in severe cases, heart failure, shock and coma. It is recommended that patients with hyperthyroidism should consult a doctor in a timely manner and follow the doctor’s instructions to carry out scientific and effective treatment, and should not be negligent so as not to delay the condition.