Search Strategy and selection criteria
We searched PubMed, Cochrane Library, and Medline for papers published between January 2012 and December 2022, using the following terms: “skin microbiome”, “bacteria”, “Staphylococcus aureus ”, “fungi”, “mites”, “atopic dermatitis”, “eczema”, and “food allergy” in combinations. Articles were also identified through searches of reference lists of selected key papers in the field. The search was not limited by language. The final reference list was selected on the basis of originality, up-to-dateness, impact in the field, and relevance to the broad scope of this review.