Nov 30, 2022 · Hyperthyroidism can be caused by several medical conditions that affect the thyroid gland. The thyroid is a small, butterfly-shaped gland at the base of the neck.

Jul 8, 2025 · What causes hyperthyroidism? A variety of conditions can cause hyperthyroidism. Graves’ disease, an autoimmune disorder, is the most common cause of hyperthyroidism.

Graves’ disease, the most common cause of hyperthyroidism, is an autoimmune disorder. With this disease, your immune system attacks the thyroid and causes it to make too much thyroid hormone. …

Hyperthyroidism means your thyroid gland is too active. This tiny gland is found in your neck. An overactive thyroid gland makes too much thyroid hormone. This makes your metabolism work at a …

Hyperthyroidism (overactive thyroid) happens when your thyroid creates and releases more hormones than you need. Graves’ disease is the most common cause.

6 days ago · Thyroid disease occurs when the thyroid gland isn’t functioning correctly. Learn more about thyroid disease causes and risk factors.

What causes hyperthyroidism? Hyperthyroidism has several causes. These may include: Graves disease. It is the most common cause of hyperthyroidism. This is an autoimmune disorder. It …

Hyperthyroidism occurs when the thyroid gland produces too much thyroid hormone. The thyroid is the butterfly-shaped gland located at the front of the lower neck, near the top of the collarbone. The …

Apr 11, 2025 · Hyperthyroidism is a condition in which your body makes too much thyroid hormone. It is also called overactive thyroid. Thyroid hormones are made by the thyroid gland. The thyroid gland is …

Causes of an overactive thyroid range from an autoimmune disease to abnormal growths that cause too much thyroid hormone. Graves’ disease is an autoimmune condition. It causes your immune system …