Most thyroid disorders manifest themselves in the form of goiter, hyperthyroidism, and hypothyroidism. 1. Hyperthyroidism manifests itself by causing certain harm to the heart, cerebrovascular system, digestive system, reproductive system, and joint system. It can also cause wasting, hyperthyroid heart disease, and thyroid-related eye disease. 2. Hypothyroidism is manifested as: chest tightness, pericardial effusion, enlarged heart, shortness of breath, bradycardia, coronary heart disease, menstrual cycle disorder, heavy menstruation, and in severe cases, infertility. Men can cause impotence, premature ejaculation, hypogonadism and other symptoms. 3.The enlarged thyroid gland usually has no symptoms in the early stage, only when the swelling is large, it can compress the trachea and esophagus, leading to symptoms such as difficulty in breathing and swallowing. 4.Thyroid adenoma has a slow course and is usually asymptomatic. It is mostly found during physical examination, and when the tumor is large, it can compress the trachea and cause tracheal displacement. 5. In the early stage of thyroid cancer, the neck can be enlarged, and as the tumor increases, breathing difficulty, hoarseness, and obstruction of swallowing can occur. The causes of thyroid disease are different, and the symptoms are also different, so specific analysis is needed.