It is understood that the angular cheilitis often occurred in the mouth of the side or both sides of the mucosa. Due to different causes of malnutrition is divided into angular cheilitis, angular cheilitis bacteria, fungi and angular cheilitis. Angular cheilitis malnutrition and nutritional deficiencies in vitamin B family, or zinc deficiency often occur in persons to a lack of vitamin B group the most common cause of angular cheilitis. The initial performance of the red for the mouth, itching, followed by epithelial shedding, the formation of erosion, impregnation or cracks when the crack mouth bleeding easily, eat all the affected words.

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