If there is white discharge from the corners of the mouth, it may be caused by keratitis, which is mostly caused by vitamin and micronutrient deficiencies in the body. The main symptoms are chapped, bleeding and erosion of the corners of the mouth, and the erosion surface is prone to bacterial infection, resulting in white inflammatory discharge from the corners of the mouth. It is also possible to suffer from fungal stomatitis, which is caused by localized infection of the corners of the mouth with Candida albicans and occurs in people with low immunity, commonly in the elderly and children. The elderly, due to missing teeth and collapsed corners of the mouth, the folds of the corners of the mouth will accumulate saliva, resulting in long-term local wetness, easily infected with Candida albicans, resulting in white corners of the mouth. Low-aged children often drool will also make the corners of the mouth wet, when infants and children with nutritional imbalance, colds, fever, low body immunity, also easy to trigger Candida albicans infection.