Thyroiditis often refers to subacute thyroiditis, a disease caused by a viral infection. The most common symptoms include sore throat, fever, pain in the front of the neck, palpitations, and weight loss. Therefore, many people might think it is a throat inflammation and initially visit an otolaryngologist. In such cases, it is essential to promptly check thyroid function and perform a thyroid ultrasound, as well as examine erythrocyte sedimentation rate and complete blood count. If these symptoms occur, it is important to seek timely treatment from an endocrinology specialist.