What are the symptoms of hyperthyroidism?

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Last updated: March 28, 2025View editorial policy

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From the Guidelines

Hyperthyroidism symptoms include weight loss, palpitations, heat intolerance, tremors, anxiety, and other symptoms of hypermetabolic activity, as noted in patients with thyrotoxicosis due to thyroiditis 1. These symptoms result from excessive thyroid hormone production, which accelerates the body's metabolism. The severity varies widely between individuals, with some experiencing mild symptoms while others have more pronounced effects.

  • Common symptoms of hyperthyroidism include:
    • Weight loss despite increased appetite
    • Rapid or irregular heartbeat
    • Anxiety, irritability, and tremors in the hands and fingers
    • Heat sensitivity, fatigue, and difficulty sleeping
    • Increased sweating
    • Enlarged thyroid gland (goiter)
    • Eye-related symptoms, such as bulging eyes, redness, and discomfort, particularly in Graves' disease
    • Menstrual irregularities in women and erectile dysfunction or reduced libido in men According to the most recent evidence, thyrotoxicosis due to thyroiditis may present with these symptoms, although they may be masked if the patient is taking beta-blockers 1. It is essential to seek medical attention promptly if these symptoms occur, as untreated hyperthyroidism can lead to serious complications, including heart problems, osteoporosis, and a dangerous condition called thyroid storm, characterized by extremely high body temperature, rapid heartbeat, and potential heart failure.

References

Guideline

Guideline Directed Topic Overview

Dr.Oracle Medical Advisory Board & Editors, 2025

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This information is intended for healthcare professionals. Any medical decision-making should rely on clinical judgment and independently verified information. The content provided herein does not replace professional discretion and should be considered supplementary to established clinical guidelines. Healthcare providers should verify all information against primary literature and current practice standards before application in patient care. Dr.Oracle assumes no liability for clinical decisions based on this content.

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