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  1. Hyperthyroidism - Symptoms and causes - Mayo Clinic

    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.

  2. Hyperthyroidism (Overactive Thyroid): Symptoms & Treatment

    Hyperthyroidism, also called overactive thyroid, happens when your thyroid makes and releases high levels of thyroid hormone. It speeds up several bodily functions, causing symptoms like rapid heart …

  3. Hyperthyroidism: Symptoms, Causes, Diagnosis, Treatment - WebMD

    Apr 11, 2024 · If you have hyperthyroidism, it means your thyroid is overactive and produces too much of a hormone called thyroxine. Learn symptoms, causes, diagnosis, and treatment options.

  4. Hyperthyroidism: Symptoms, Causes, Treatment, and More

    Jul 8, 2025 · What Is Hyperthyroidism (Overactive Thyroid)? Hyperthyroidism occurs when the thyroid gland produces too much thyroid hormone, leading to symptoms like weight loss, rapid heartbeat, …

  5. Hyperthyroidism - Wikipedia

    Hyperthyroidism is a endocrine disease in which the thyroid gland produces excessive amounts of thyroid hormones. [3] Thyrotoxicosis is a condition that occurs due to elevated levels of thyroid …

  6. Hyperthyroidism (Overactive Thyroid) - NIDDK

    Hyperthyroidism, an overactive thyroid gland, can speed up your body’s functions. Learn about its causes, complications, symptoms, diagnosis, and treatment.

  7. Hyperthyroidism | American Thyroid Association

    Apr 21, 2021 · Hyperthyroidism can be caused by an autoimmune condition (Graves’ disease), inflammation of the thyroid (thyroiditis), or due to thyroid nodules making too much thyroid hormone …

  8. Hyperthyroidism - Harvard Health

    Apr 11, 2025 · What is it? 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 …

  9. Hyperthyroidism Guide: Causes, Symptoms and Treatment Options

    Apr 11, 2025 · Hyperthyroidism - an easy to understand guide covering causes, diagnosis, symptoms, treatment and prevention plus additional in depth medical information.

  10. Hyperthyroidism | Endocrinology and Diabetes - UC Davis Health

    With hyperthyroidism, the thyroid makes and releases too much thyroid hormone. The condition causes things such as your breathing, heart rate and metabolism to get faster.