Investigators will determine if the MRSA collected from people with AD is primarily community or hospital associated. They will also determine if the proteins on the skin of ADEH+ people with MRSA differ from the proteins on the skin of AD people with MSSA or people without AD, or if there are any marked differences in serum total IgE levels between AD subjects with MRSA, MSSA, or without S. aureus. Approximately 60 ADEH+ and 60 ADEH- participants will need to be enrolled to find participants with MRSA or MSSA on their skin. Presence of these bacteria on the skin can only be determined once skin swabs are collected and tested.