Etiology: C. albicans, staphylococci, and streptococci> mixed infection; vitamin B Complex deficiency; riboflavin deficiency; and iron deficiency. Also occurs from a loss of vertical dimension, drooling or licking of the corner of the mouth, anemia, immunosuppression and extension of oral infection, or malabsorbtion states (Crohn's disease).
Description: This lesion affects the corner of the mouth. Of particular importance in-patients at risk of ETOH abuse. Commissures of mouth may appear wrinkled, red, fissured, cracked, or crusted.