angular stomatitis or angular cheilitis or perleche in asian man. mouth ulcer. common inflammatory condition caused by iron, zinc

adult angular asian b12 cancer carcinoma cell cheilitis cracked cracking cracks deficiency disease dry dryness elder elderly face infection inflammation inflammatory iron lesion lesions lip lips male man mouth old oral pain painful patient perleche problem red redness riboflavin sign skin squamous stomatitis symptom ulcer ulceration unhealthy vitamin vitamins zinc