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Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

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Iodine deficiency remains the main important cause of hypothyroidism worldwide while in the developed countries the main cause is autoimmune thyroiditis (1).

Hypothyroidism may be classified into:

  • primary hypothyroidism where the pathology affect the thyroid gland itself
  • secondary hypothyroidism where the thyroid gland is normal but the production of stimulatory factors is disordered


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