The typical course of the disease is demonstrated. The thyroiditis affects first one lobe. Weeks later this lobe is on the way of healing while the contralateral lobe becomes ill. Finally, both lobes become normal. The vascularization follows this order: at the time of pain the vascularization is decreased or absent while later in the course the vascularization became normal. The size of the thyroid presents similar changes: at the time of painful inflammation the thyroid was elarged while later in the course decreased in size.