Hyperthyroidism, also known as hyperthyroidism, is a group of common endocrine diseases caused by a variety of reasons. Clinical symptoms include enlarged thyroid gland, high metabolism, proptosis, iodine hyperthyroidism, easy hunger, and endocrine disorders, anxiety and impatience, insomnia and dreaminess, loss of appetite, palpitations, fear of heat, and lack of body mass. What are the causes of hyperthyroidism? 1, Viral infection: Invasion of foreign evil causes the body’s immunity to decline and its ability to resist disease to decrease, and coupled with viral infection, people are prone to hyperthyroidism. 2, caused by trauma: after a car accident, people are injured and infected with bacteria, and they are prone to hyperthyroidism. 3, mental stimulation: people are prone to hyperthyroidism when they are sad and anxious or angry or depressed and nervous. 4. Excessive fatigue: With the increase of people’s life pressure, people are prone to get sick due to excessive fatigue. 5. Pregnancy: Pregnancy is also one of the causes of hyperthyroidism or aggravation of hyperthyroidism. 6. Excessive iodine intake: People living by the sea are prone to suffer from hyperthyroidism due to excessive iodine intake caused by eating foods with high iodine content for a long time. 7. Drug effects: Some drugs have side effects and can cause hyperthyroidism if not taken properly. How is hyperthyroidism caused? Amiodarone can induce hyperthyroidism. Before taking this drug, it is best for patients to use it according to the doctor’s instruction and not to take this drug indiscriminately to avoid developing hyperthyroidism. Due to patients’ lack of knowledge about hyperthyroidism and failure to seek medical treatment in time, it often happens that the symptoms of hyperthyroidism suddenly aggravate to reach a life-threatening condition, whose main manifestations are high fever, profuse sweating, extreme tachycardia, vomiting, diarrhea, irritability, and in severe cases, coma, which can lead to death if not rescued in time. The symptoms of early hyperthyroidism are not obvious and vary from person to person. Patients with the above symptoms should go to a regular specialized hospital for diagnosis in time to avoid delaying treatment and aggravating the condition.