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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 …

  3. Hyperthyroidism: Symptoms, Causes, Diagnosis, Treatment

    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 …

  5. 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.

  6. Hyperthyroidism - Johns Hopkins Medicine

    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 …

  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 …

  8. Hyperthyroidism: Symptoms, treatment, causes, and diet

    Jul 18, 2025 · Hyperthyroidism is a medical condition due to high levels of thyroid hormone in the bloodstream. Learn about the causes, symptoms, and treatments here.

  9. 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 …

  10. Hyperthyroidism - Endocrine and Metabolic Disorders - Merck ...

    Hyperthyroidism is characterized by hypermetabolism and elevated serum levels of free thyroid hormones. Symptoms include palpitations, fatigue, weight loss, heat intolerance, anxiety, and …