Blastocystis hominis was isolated through a stool microbiologic examination, implicating that this parasite can cause the development of Hashimoto's thyroiditis and chronic urticaria.

What infections cause thyroiditis?

Subacute thyroiditis is an uncommon condition thought to be caused by viral infection of the thyroid gland. The condition often occurs after a viral infection of the upper respiratory tract. Mumps virus, influenza virus, and other respiratory viruses have been found to cause subacute thyroiditis.

What is the most common cause of thyroiditis?

Some of the agents known to cause thyroiditis are antibodies (the most common cause), drugs, radiation and organisms (viruses and bacteria). Conditions in which the body attacks itself are autoimmune diseases. Thyroiditis can be an autoimmune disease (antibody-mediated).