When both "excessive internal heat" and angular cheilitis occur simultaneously, it is necessary to distinguish between them. "Excessive internal heat" is generally a term used in Traditional Chinese Medicine, and patients may experience symptoms like constipation, blistering at the corners of the mouth, sore throat, and inflamed gums, which might indicate an excessive internal fire in the liver. At this time, it is recommended that patients should drink more water, eat a light diet, rest adequately, and develop proper living habits. Additionally, if a patient presents with angular cheilitis, it could be one of the conditions caused by "excessive internal heat." This condition may include localized ulceration, bleeding, inflammation, and cracking at the corners of the mouth. Angular cheilitis could also be due to a deficiency in certain vitamins within the patient's body or due to dry weather conditions. Therefore, it is crucial for patients to seek timely medical attention at a hospital, as different conditions require different treatment approaches.