What is hyperthyroidism?
Hyperthyroidism (overactive thyroid) is a condition in which the thyroid gland produces too much thyroid hormone. The most common cause in Australia is Graves' disease, an autoimmune condition. Other causes include toxic nodules and thyroiditis.
Symptoms may include unintentional weight loss, heat intolerance, sweating, tremor, palpitations, anxiety, sleep disturbance, and changes in bowel habits. Some people develop eye symptoms such as bulging eyes with Graves' disease.
How a telehealth GP can help
A NewDoc GP can take a detailed history, order thyroid function tests, and issue referrals to an endocrinologist for definitive diagnosis and treatment. For ongoing monitoring, your GP can coordinate follow-up bloods and communicate with your specialist team.
Some treatments — such as radioactive iodine or thyroid surgery — require specialist, in-person care. Antithyroid medications are typically initiated or overseen by specialists but your GP may be involved in ongoing prescribing once stable.
When to seek urgent care
Symptoms suggesting thyroid storm — very high heart rate, fever, confusion, severe agitation — are medical emergencies. Call 000 or attend the nearest emergency department. Chest pain, severe shortness of breath, or marked weakness also warrant urgent in-person assessment.
References
- Hyperthyroidism (overactive thyroid) — Healthdirect Australia
- Thyroid gland — Better Health Channel
- About hyperthyroidism — Australian Thyroid Foundation
This content is informational and does not replace individual medical advice. For personal assessment, book a consultation with your GP. In emergencies, call 000.
Last reviewed 16 April 2026. Editorial policy