Perleche, aka, angular cheilitis, is a common irritating eruption of the corners of the mouth. It is more common in the elderly, especially those who wear dentures although it also seen in children. Perleche is caused by an infection involving fungi and/or bacteria. Potential predisposing factors: include nutritional deficiencies, dry mouth, a lip-licking habit, drooling, immunosuppression, and others. Treatment is based on the exact cause(s) of the condition, but often an antifungal cream such as clotrimazole is combined with a topical steroid like hydrocortisone.
Chapped lips are commonly seen during the winter months due to decreased ambient humidity. Many people lick their lips in an attempt to soothe them. This aggravates the problem due to evaporation of saliva leading to further dryness. Treatment involves frequent, liberal application of lip balms, especially those with petrolatum. Topical steroids, such as, hydrocortisone ointment, are beneficial for short periods to reduce burning and stinging. Finally,stop licking!