Subacute lymphocytic thyroiditis

Silent thyroiditis is a form of thyroiditis. It may occur at any age and is more common in females. When silent thyroiditis occurs postpartum it is called postpartum thyroiditis. 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. This disorder should not be confused with de Quervain's thyroiditis which is another form of subacute thyroiditis.