Fire is one of the causes of painful lymph nodes in the chin, but not all. It is necessary to combine the specific situation to determine the cause and carry out symptomatic treatment. The main causes of chin lymph node pain include the following: 1. Consider acute lymph node inflammation caused by what is commonly known as a fire. Mostly due to the recent consumption of more spicy and stimulating food, or overeating, etc., resulting in the body’s damp heat accumulation, and then on the offender caused by the chin lymph node enlargement, pain. Lymph node pain caused by this cause needs to apply drugs to clear heat and detoxify, while adjusting the diet and eating less spicy and stimulating food, which can be cured. 2. The diagnosis can be confirmed by ultrasound examination and tuberculin test.