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Of those women who experience hypothyroidism associated with postpartum thyroiditis, one in five will develop permanent hypothyroidism requiring lifelong treatment. Postpartum thyroiditis is believed to result from the modifications to the immune system necessary in pregnancy, and histologically is a subacute lymphocytic thyroiditis.
Hashimoto's thyroiditis, also known as chronic lymphocytic thyroiditis, Hashimoto's disease, and autoimmune thyroiditis is an autoimmune disease in which the thyroid gland is gradually destroyed. [7] [1] Early on, symptoms may not be noticed. [3] Over time, the thyroid may enlarge, forming a painless goiter. [3]
Hypothyroidism is common in pregnancy with an estimated prevalence of 2-3% and 0.3-0.5% for subclinical and overt hypothyroidism respectively. [8] Endemic iodine deficiency accounts for most hypothyroidism in pregnant women worldwide while chronic autoimmune thyroiditis is the most common cause of hypothyroidism in iodine sufficient parts of the world.
Symptoms of normal pregnancy, like fatigue, can make it easy to overlook thyroid problems in pregnancy. [1] Thyroid hormone is vital during pregnancy. The unborn baby's brain and nervous system need thyroid hormone to develop. During the first trimester, the baby depends on the mother's supply of thyroid hormone. At 10 to 12 weeks of pregnancy ...
[2] [4] [5] It is considered to be a variant of Hashimoto's thyroiditis. When subacute lymphocytic thyroiditis occurs up to 12 months postpartum, it is called postpartum thyroiditis. It has an increased incidence in women with presence of thyroid peroxidase (TPO) antibodies prior to pregnancy and in women with preexisting Type 1 diabetes ...
Thyroiditis is generally caused by an immune system attack on the thyroid, resulting in inflammation and damage to the thyroid cells. This disease is often considered a malfunction of the immune system and can be associated with IgG4-related systemic disease, in which symptoms of autoimmune pancreatitis, retroperitoneal fibrosis and noninfectious aortitis also occur.
Both of these entities can be considered subtypes of Hashimoto's thyroiditis and have an autoimmune basis. Anti-thyroid antibodies are common in all three and the underlying histology is similar. [1] [2] This disorder should not be confused with de Quervain's thyroiditis which is another form of subacute thyroiditis.
Certain medications can have the unintended side effect of affecting thyroid function. While some medications can lead to significant hypothyroidism or hyperthyroidism and those at risk will need to be carefully monitored, some medications may affect thyroid hormone lab tests without causing any symptoms or clinical changes, and may not require treatment.