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What is Graves’ disease?

Graves’ disease is an autoimmune disease which causes the thyroid gland to become overactive. Graves’ disease is the leading cause of an overactive thyroid, which affects 2% of women and 0.2% of men in the UK .

What are the symptoms of Graves’ disease?

The most common symptoms of Graves’ disease include:

Graves’ disease can also affect your mood in a number of ways, including:

In some cases you may develop related conditions such as:

If left unmanaged Graves’ disease can sometimes result in complications such as:

What causes Graves’ disease?

An autoimmune disorder is when your body mistakes healthy cells for harmful cells and attacks them. In the case of Graves’ disease, the body’s immune system produces antibodies which in turn cause the thyroid gland to grow and become overactive.

It is not well-understood why autoimmune disorders occur. In Graves’ disease there appears to be a genetic component, with Graves’ disease tending to run in families.

How is it diagnosed?

At first the doctor will ask you about your symptoms and medical history. They may conduct a physical exam to check for any signs of Graves’ eye disease, an enlarged thyroid gland, or a tremor.

They will then take a blood sample to test any increase in TSH, a hormone produced by the thyroid gland. This is normally enough to make a diagnosis of Graves’ disease, but in some cases you might need imaging tests, such as a

CT scan



of your neck.

How is it treated?

The main treatment for Graves’ disease is medication.

If you have severe symptoms of Graves’ disease when diagnosed, you might be offered beta blockers in the short term to counter the effects of an overactive thyroid gland.

In the longer term, your doctor will prescribe medication which inhibits your thyroid gland’s production of hormones. Initially you will be given a high dosage of medication, and this will be reduced periodically if symptoms have been brought under control. The aim is to gradually return your thyroid’s function to normal, and move off medication in the long term.

There are a number of drugs available to counter the thyroid gland. Each has different side effects and risks and it is important to discuss these with your doctor.

If medication fails to restore normal thyroid function, your doctor may recommend more invasive treatments to reduce the size of the thyroid gland, including: