Hi, It seems that you may be having angular cheilitis.I would like to say few things about angular cheilitis...Angular cheilitis is a common inflammatory condition affecting the corners of the mouth or oral commissures. It is also called angular stomatitis and cheilosis. There may be some cause..Dribbling of saliva, Overhang of upper lip resulting in deep furrows,,Dry chapped lips,Proliferation of bacteria (impetigo), yeasts (thrush) or virus (cold sores),denture,poor nutrition, iron,folic acid and riboflavin deficiencies,systemic illness likeulcerative colitis, atopic dermatitis, drugs like isotretinoin and genetic factors.. There may be..Painful cracks, fissures,Blisters, erosions, ooze, crusting, Redness, Bleeding..etc You consult dermatologist for firm diagnosis. Nutritional supplimentation,antifungal,antibiotics etc may be cosidered. Antibiotic cream, antifungal cream or emmolient may be applied. I hope you got my answer. Thanks. Dr. Ilyas Patel MD