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Neither of the above

Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

Authoring team

The causes of primary hypothyroidism in these circumstances are:

  • external beam irradiation of the neck
  • drug-induced hypothyroidism
  • iodine deficiency
  • iodine excess in Japan
  • goitrogen ingestion
  • amyloid goitre
  • Riedel's thyroiditis

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