Autoimmune diseases are diseases where the immune system attacks the body. Dr Norman Swan explains which are the most common.
hyperthyroidism
Thyroid gland and thyroid hormones
Your thyroid gland makes hormones that control your metabolism. An overactive or underactive thyroid can cause symptoms.
Thyroid nodules
Thyroid nodules are fluid-filled or solid lumps in the thyroid gland in the neck. Sometimes the nodules secrete excessive amounts of thyroid hormone – this is called a toxic adenoma or ‘hot nodule’.