Underactive Thyroid (Hypothyroidism)logo

Introduction

An underactive thyroid gland (hypothyroidism) is where your thyroid gland doesn’t produce enough hormones.
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Common signs of an underactive thyroid are:

  • tiredness
  • weight gain
  • feeling depressed

An underactive thyroid can often be successfully treated by taking daily hormone tablets to replace the hormones your thyroid isn’t making.

When to see your GP

Symptoms of an underactive thyroid are often similar to those of other conditions, and they usually develop slowly, so you may not notice them for years.

You should see your GP and ask to be tested for an underactive thyroid if you have symptoms including:

  • tiredness
  • weight gain
  • depression
  • being sensitive to the cold
  • dry skin and hair
  • muscle aches

The only accurate way of finding out whether you have a thyroid problem is to have a thyroid function test, where a sample of blood is tested to measure your hormone levels.

Read more about testing for an underactive thyroid.


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