Causes of Hyperthyroidism
- Graves' disease: Graves’ disease is an autoimmune issue where the body's immune system overstimulates the thyroid, causing the overproduction of thyroid hormone. Graves’ disease is the most common cause of hyperthyroidism. An antibody (TSH-R Ab) to the TSH receptor causes the thyroid to overproduce thyroid hormone.
- Toxic Multinodular Goiter: Hyperthyroidism due to toxic multinodular goiter occurs when one or more of the nodules causing the goiter to make too much thyroid hormone. Cases of hyperthyroidism caused by a toxic multinodular goiter tend to be less severe than those caused by Graves’ disease.
- Toxic Adenoma: Toxic adenoma is a single nodule in an otherwise normal thyroid gland that makes too much thyroid hormone. It is the least common cause of hyperthyroidism.
- Graves’ disease
- Gender: women are more likely to develop hyperthyroidism
- Age: hyperthyroidism can happen at any age but is more predominant in people over 60.
- Family history: having a family history of Graves’ disease or hyperthyroidism increases the risk for developing the condition.
- Anxiety Insomnia (inability to sleep through the night)
- Heart palpitations
- Weight loss
- Muscle weakness
- Heat intolerance
- Excessive sweating
- Menstrual changes