Some of the thick neck is caused by physiological factors, while others are caused by neck diseases. Due to the influence of congenital genetic factors, some people are born with thick necks. And for obese people, there is more subcutaneous fat in the neck, so the neck is relatively thick. These are normal physiological phenomena. When suffering from thyroiditis or thyroid tumor, the thyroid gland will be significantly enlarged, and the patient will feel that his neck has become thicker. Or when the lymph nodes of the neck are obviously swollen, the subcutaneous soft tissue of the neck will also increase, and the patient will have a feeling of neck thickening. Therefore, the patient should go to the regular hospital for examination to find out whether it is physiological or pathological. If the neck is thickened due to pathological factors, it should be examined and treated in time.