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De Quervain's thyroiditis; Subacute nonsuppurative thyroiditis; Giant cell thyroiditis; Subacute granulomatous thyroiditis
Subacute thyroiditis involves swelling (inflammation) of the thyroid gland that usually follows an upper respiratory infection.
Subacute thyroiditis is a rare condition. It is thought to be caused by a viral infection. The condition often occurs after a viral infection of the upper respiratory tract, such as mumps and influenza.
Subacute thyroiditis occurs most often in middle-aged women with recent symptoms of a viral respiratory tract infection.
Ladenson P, Kim M. Thyroid. In: Goldman L and Ausiello D, eds. Cecil Medicine. 23rd ed. Philadelphia, Pa: Saunders; 2007:chap 244.