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.

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

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.

Apr 11, 2024 · Hyperthyroidism is when your thyroid -- the butterfly-shaped gland at the bottom of your neck, just above your collarbone -- makes too much thyroid hormone. Because your body …

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 …

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 …

Oct 11, 2024 · Hyperthyroidism is one type of thyroid disease characterized by the excess production of thyroid hormones, leading to an overactive metabolism. Understanding the …

Hyperthyroidism develops when your body has too much thyroid hormone. Your thyroid gland, located at the base of your neck, produces hormones that control how the cells in your body …

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. …

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 …