Congenital hypothyroidism

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Congenital hypothyroidism is a condition that is present at birth in which the thyroid gland does not produce enough thyroid hormone. Learn about congenital hypothyroidism and how it is diagnosed and treated.

Key points

  • Congenital hypothyroidism occurs when the thyroid gland is missing, is in the wrong place, is smaller than usual or is not working properly and has decreased or absent hormone production.
  • Congenital hypothyroidism is usually diagnosed during a newborn screening test.
  • Treatment for congenital hypothyroidism involves replacing the missing thyroid hormone by giving levothyroxine, a synthetic hormone medication.
  • The dose of levothyroxine may change as your child grows and they should have blood tests as recommended by their doctor to ensure the correct changes are being made to the dosage.
Last updated: November 15th 2022