What Is Subacute Thyroiditis?

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Thyroiditis refers to inflammation of the thyroid gland. Thyroiditis includes a group of disorders that cause the thyroid to become inflamed, including Hashimoto’s Thyroiditis.

Subacute thyroiditis is a rare condition and is thought to be caused by a viral infection, as it often occurs after one, such as mumps, flu or a cold.

Subacute thyroiditis has also been reported in one study, to show up after a flu vaccination.  [1]

Although definitely quite rare, the study states that subacute thyroiditis should be considered as a possible outcome following a flu jab.

The first signs are soreness and tenderness in the area of the thyroid gland, and sometimes pain spreading to other parts of the neck, ears or jaw.

Subacute Thyroiditis May Start With Symptoms of Hyperthyroidism;

  • Irritability
  • Anxiety
  • Sudden weight loss
  • Fast or irregular heartbeat
  • An increased body temperature
  • Restlessness
  • Trouble concentrating
  • Diarrhoea

Which Often Develop into Symptoms of Hypothyroidism;

And like all thyroid conditions, it is more common in women than men.

Other symptoms may include:

If you’re suspected to have this condition, then a full thyroid panel is usually conducted as well as an examination of the affected area. In some cases, a thyroid biopsy may also be done. [2]

In the early stages of Subacute Thyroiditis, Free T4 levels are usually high whilst TSH levels are low. In the later stages, TSH levels are usually high while T4 levels are low.

The purpose of treatment for the condition is to reduce pain and inflammation and treat hyperthyroidism or hypothyroidism, if they occur. Treatment for subacute thyroiditis is usually temporary, as your doctor will eventually wean you off any medications that have been prescribed to treat the condition, as you get better.

The symptoms of subacute thyroiditis usually go away within one to two years, however, hypothyroidism may end up being permanent and medication needed for life.

The American Thyroid Association estimates that approximately 5% of people with subacute thyroiditis develop permanent hypothyroidism. [3]

You can click on the hyperlinks in the above post to learn more and see references to information given.

References

[1] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4962945/

[2] https://www.nlm.nih.gov/medlineplus/ency/article/003899.htm

[3] https://www.thyroid.org/thyroiditis/

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Written by Rachel, The Invisible Hypothyroidism

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