An overactive thyroid can cause a wide range of symptoms, including:
Find out more about the symptoms of an overactive thyroid.
See a GP if you have symptoms of an overactive thyroid.
They'll ask about your symptoms and if they think you might have a thyroid problem, they can arrange for a blood test to check how well your thyroid is working.
If the blood test shows that you have an overactive thyroid, you may be referred for further tests to identify the cause.
Find out more about how an overactive thyroid is diagnosed.
An overactive thyroid is usually treatable.
The main treatments are:
Each of these treatments has benefits and drawbacks. You'll usually see a specialist in hormonal conditions (endocrinologist) to discuss which treatment is best for you.
Find out more about how an overactive thyroid is treated.
There are several reasons why your thyroid can become overactive.
Find out more about the causes of an overactive thyroid.
An overactive thyroid can sometimes lead to further problems, particularly if it's not treated or well controlled.
Find out more about the complications of an overactive thyroid.