The lower part of the earlobe corresponds to the parotid gland, the mandibular joint, the ascending branch of the mandible, and the mandibular lymph nodes. If clinically significant deformity of the lower part of the earlobe or restriction of mouth opening or biting is found, it is important to consider the possibility of dislocation of the mandibular joint or fracture of the mandible. In addition, if there is swelling, pain or bulging of the cheek under the earlobe, first consider whether there is acute pancreatitis or a swelling in the parotid gland, such as the most common parotid gland hybrid tumor or parotid cancer. There is also inflammation of the pharynx secondary to mandibular lymphadenitis, which is mainly treated with anti-inflammatory therapy.