 Infections in atopic dermatitis are predominantly caused by Staphylococcus aureus and various species of Streptococcus. ATx201 is a potent antibiotic against these and other organisms. ATx201 overcomes current resistance problems such as methicillin resistant Staphylococcus aureus MRSA, vancomycin resistant enterococci VRE as well as resistance towards all topical antibiotics. ATx201 also exhibits an extraordinarily strong ability to delay the onset of de novo resistance compared to currently marketed antibiotics. 