Urticaria and Thyroid Autoimmunity

Background: Chronic urticaria is a common clinical condition whose etiology, in about 75% of cases, is unknown and is therefore called chronic idiopathic urticaria (CIU). A link between CIU and autoimmune thyroid diseases was proposed several decades ago. Here we review this topic. Summary: Several studies have been performed to determine if and to what degree there is an association between CIU and autoimmune thyroid diseases, particularly...