What Does a Swollen Lymph Node Under the Jawline That Hurts to Touch Mean?
1. Introduction A swollen, painful lymph node under the jawline typically indicates a localized infection in the head, mouth, or neck region, acting as a direct inflammatory response to invading pathogens. These submandibular lymph nodes serve as critical immune checkpoints, filtering lymphatic fluid draining from the teeth, gums, tongue, and salivary glands. When bacteria or … Read more