What should you know about multinodular goiter hyperthyroidism?

The thyroid uses hormones to regulate energy use, temperature, digestion and heart activity. In a multinodular goiter, one or more nodules may work independently and release more hormone than the body needs. This is a form of [Hyperthyroidism](/conditions/hyperthyroidism/). Possible symptoms include palpitations, feeling anxious, difficulty sleeping, excessive sweating, heat intolerance, diarrhoea, or night sweats. Symptoms may be subtle, especially in older adults.

A clinician usually checks thyroid blood tests and examines the neck. An ultrasound can describe the nodules, while a thyroid scan may show which areas are producing hormone. These tests answer different questions, so one test does not replace the others.

Treatment is tailored to hormone levels, nodule findings, symptoms, age, pregnancy plans and other medical conditions. A medicine may reduce hormone production or control symptoms while a longer-term option is considered. Radioactive iodine or surgery may be discussed in suitable cases; enlarged tissue pressing on the throat can influence that decision. Keep follow-up appointments and tell the clinician about heart symptoms, eye symptoms, supplements, and medicines before treatment changes.

Seek urgent help for severe or persistent palpitations, chest pain, fainting, severe breathlessness, new confusion, or a very high fever with marked agitation. These symptoms can signal a serious complication of excess thyroid hormone. Contact your clinician promptly if neck swelling causes trouble swallowing or breathing, or if symptoms suddenly become much stronger.

Ask which nodules are producing hormone, whether you need an ultrasound or scan, and what your thyroid blood tests show. Discuss the benefits and drawbacks of medicines, radioactive iodine and surgery, plus how treatment could affect future pregnancy plans.