Hypothyroidism is a condition in which either the thyroid gland (a small butterfly-shaped gland in the front of your neck) does not make enough thyroid hormone, or the pituitary gland does not make enough thyroid stimulating hormone, or TSH (a hormone that tells the thyroid gland to make thyroid hormone). Your body uses thyroid hormone to regulate its metabolism.
Congenital hypothyroidism (CH) happens when a baby is born with a thyroid that is not fully developed, not developed at all, or unable to make thyroid hormone. 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:
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