The specific reasons for the swelling of the neck and throat are as follows: 1. Inflammation: It may be due to acute inflammatory disease factors in the throat itself, causing inflammation and swelling of the lymph nodes in the neck, and significant local pressure pain may occur. In some patients, the disease may cause chills, fever and other systemic symptoms. 2. Congenital hyperplasia: Some patients may have congenital hyperplasia such as thyroglossal cysts, which are often located in the midline of the neck and can move up and down with swallowing. 3. Thyroid problems: Some patients may have inflammation of the thyroid gland or have thyroid nodules and masses. If necessary, further imaging tests such as ultrasound of the neck can be done.