Fexofenadine is the hydrochloride salt of terfenadine’s active metabolite. In 2006, the FDA approved an oral suspension for the management of chronic idiopathic urticaria and seasonal allergic rhinitis in children. This review article summarizes the clinical pharmacology, therapeutic applications, drug-drug interactions, adverse events and food-drug interactions of fexofenadine that have been r...

The treatment of antihistamine and steroid resistant Chronic Idiopathic Urticaria (CIU) during pregnancy poses a challenge due to teratogenicity of immunosuppressants. Omalizumab is a recently FDA approved therapy for CIU and is classified as pregnancy category B. We present an initial series of subjects treated at a tertiary care center for antihistamine and steroid resistant CIU with omalizum...

269 Refractory Chronic Urticaria Treated with Omalizumab Martinez Saenz, NP, Ramírez Del Pozo, ME, Lopez Tiro JJ, and Javier Gomez Vera, MD. Alergia e inmunologia clínica, Hospital Regional Lic. Adolfo Lopez Mateos, Distrito Federal, Mexico. Background: Chronic urticaria (CU) is a common disorder characterized by recurrent episodes of urticaria pruritic erythematous lesions, associated with ang...

Chronic idiopathic urticaria (CIU) is well known to be associated with antithyroid peroxidase antibodies and autoimmune thyroiditis. Coexisting Graves disease has only rarely been observed. We describe 2 patients with CIU who developed autoimmune hyperthyroidism with antithyrotropin receptor antibodies. Antithyroid peroxidase antibodies were also present in 1 of the patients, but both responded...