Some cases may be viral in origin, perhaps preceded by an upper respiratory tract infection. Viral causes include Coxsackie virus, mumps and adenoviruses. Some cases develop postpartum .
De Quervain's thyroiditis
Ord's thyroiditis
Riedel's thyroiditis
Hashimoto's thyroiditis
Subacute thyroiditis
Radiation-induced thyroiditis
Subacute lymphocytic thyroiditis
Thyroid lymphoma