Thyroiditis are the group of disorders characterized by thyroid inflammation that might be locally painful and tender with no or minimal hormonal disturbances, or painless with subclinical inflammation. The routes of causes include thyroglossal duct remnant, congenital branchial fistula, direct spread from an adjacent site, perforated esophagus and hematogenous spread. Thyroiditis is clinically classified as painful and painless thyroiditis. Subacute thyroiditis, infectious thyroiditis, radiation thyroiditis and trauma-induced thyroiditis are classified under painful thyroiditis. Hashimoto’s thyroiditis is often supervening where inflammation could clinically mimic other painful forms of thyroiditis. Causes of the pattern of painless thyroiditis include painless, postpartum, drug-induced and fibrous thyroiditis. The acute purulent and the chronic fibrosing varieties of thyroiditis are the only ones that needed surgery, while others are expectantly followed except when there is a sudden growth of goiter heralding the development of a lymphoma with a background of Hashimoto’s thyroiditis.