angular stomatitis or angular cheilitis or perleche in asian man. common inflammatory condition of angles of mouth. caused by iron

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