The symptoms of thyroiditis, if in the early stages, include fever, particularly in the afternoon and evening, with some individuals' temperatures reaching 39 degrees Celsius. Secondly, there is neck pain, which is tender to touch. Thirdly, there may be mild symptoms of hyperthyroidism, such as palpitations, insomnia, irritability, weight loss, and increased frequency of bowel movements. If these symptoms are present, it is important to seek medical attention promptly and undergo diagnosis and treatment under the guidance of a doctor.