Hyperthyroidism may cause irregular menstruation. Hyperthyroidism or hypothyroidism may affect the body’s metabolism, which may affect the gynecological endocrine function, causing changes in hormone levels in the body, and therefore may also lead to menstrual irregularities. Therefore, women with irregular menstruation should not only check the sex hormones, but also routinely check the thyroid function, and some need to check other items at the same time, there are abnormalities in the thyroid function, including hyperthyroidism, need to be treated at any time, and do a good job of monitoring the function of the thyroid gland. Hyperthyroidism can also cause various other systemic diseases, including heart disease, vision problems, muscle atrophy, etc., so it must be taken seriously. Seek medical attention when you notice symptoms.