What Are Some of the Different Types of Hypothyroidism?

Congenital hypothyroidism (CH) happens when a baby is born with a thyroid that is not fully developed or not developed at all. CH can also happen when the pituitary gland (small gland in the brain that controls other glands in the body) does not make enough thyroid stimulating hormone (TSH).

Acquired hypothyroidism occurs later in life. Common causes include:

  • Autoimmune hypothyroidism (AH), a condition in which the body’s immune system attacks and destroys the thyroid gland to varying degrees. AH is also called Hashimoto’s thyroiditis.
  • Certain medications (such as lithium) can also cause hypothyroidism
  • Secondary hypothyroidism, a condition in which the pituitary gland makes less of a hormone called TSH.

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