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.

• 营养不良性口角炎在营养缺乏和维生素B族或锌缺乏者中常有发生，以维生素B族缺乏引起的口角炎最常见。