What Deficiency Causes Cracked Lip Corners? Understanding Angular Cheilitis
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4 min read
Over a quarter of angular cheilitis cases—the painful inflammation and cracking at the corners of the mouth—are linked to nutritional issues, particularly deficiencies in B vitamins, iron, and zinc. While many factors can contribute to this common condition, knowing what deficiency causes cracked lip corners is key to finding effective treatment and preventing recurrence.