Thanks So Much! My Husband Is 70 Yrs Old. He

Thanks so much! My husband is 70 yrs old. He has developed a small rash at both corners of his mouth that not go away. He has treated it with peroxide, triple antibiotic cream & keeps it very clean. It stings when it's washed or he puts peroxide on it. No blisters. Sort of scaly rash that at times when wet he can scratch it off. Not really scratching it. Just runs his fingernail over it.