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HealthInfo Canterbury


Your thyroid gland is a butterfly-shaped gland at the front of your neck. It releases hormones into your blood that affect your temperature and heart rate, and which turn the food you eat into energy (this is called your metabolism). The hormones are known as T3 (tri-iodothyronine) and T4 (thyroxine).

If your thyroid gland makes too much of these hormones, you will have hyperthyroidism. If your body makes too little of these hormones you will have hypothyroidism.

This section explains what happens when something goes wrong with your thyroid, and how the different conditions are treated.

Written by HealthInfo clinical advisers. Page created August 2016.

In this section

Goitre (enlarged thyroid gland)

Hyperthyroidism (overactive thyroid)

Hypothyroidism (underactive thyroid)

Nuclear medicine thyroid scan

Radioiodine for thyroid cancer

Radioiodine treatment for thyrotoxicosis (overactive thyroid)

Thyroid cancer

Thyroid disease in pregnancy

Thyroid eye disease

Thyroid nodules

Thyroiditis (inflamed thyroid)

Page reference: 49064

Review key: HITHY-49064