<prompt> Which of the following is not a feature of dequervans disease?Autoimmune etiologyElevated levels of ESRSpontaneous regressionPainful enlargement of thyroid  <response>: De quervains thyroiditis is not of autoimmune etiology. It occurs several weeks following a viral illness with a prodrome of generalized myalgia, pharyngitis, low grade fever and fatigue. Viruses involved in causing this includes mumps, coxsackie, influenza, adeno virus and echo virus. Ref: Ultrasound of the Thyroid and Parathyroid Glands By Robe A. Sofferman, Page 86; Acute Endocrinology: From Cause to Consequence By Greet Van Den Berghe, Page 10 