Symptoms of overactive thyroid 

An overactive thyroid (hyperthyroidism) has many signs and symptoms, although it is unlikely you would develop all of them.

Symptoms of hyperthyroidism

If you have hyperthyroidism, you may experience some of the following symptoms:

If you have diabetes, your diabetic symptoms, such as extreme thirst and tiredness, may be made worse by hyperthyroidism.

Signs of hyperthyroidism

If you have hyperthyroidism, you may have some of the following physical signs:

When to seek medical advice

See your GP if you are experiencing any of the above. They may not be the result of an overactive thyroid gland, but they will need further investigation.

It might be useful to make a list of your symptoms, as this can often be helpful in determining the correct diagnosis.

Page last reviewed: 05/08/2014

Next review due: 05/08/2016