Angular Cheilitis: What to Know - WebMD Angular cheilitis is the name for red, swollen patches in the corners of one or both sides of your mouth The most common cause is a fungal infection resulting from the buildup of saliva
Angular Cheilitis: Symptoms and Treatment - Verywell Health The symptoms of angular cheilitis usually occur at the corners of the mouth, where the upper and lower lips meet These symptoms can be mild or severe, affecting one or both sides of the mouth
Angular cheilitis - Wikipedia A cold sore at the corner of the mouth behaves similarly to elsewhere on the lips, and follows a pattern of vesicle (blister) formation followed by rupture leaving a crusted sore which resolves in about 7–10 days, and recurs in the same spot periodically, especially during periods of stress