Impact of Increased Immunoglobulin E to Anti-herpes Simplex Virus -1 Innate Immune Responses in Atopic Dermatitis Patients With Eczema Herpeticum

Inclusion Criteria: * Age 16-65 years old, age, sex and race match among non-atopic, ADEH- and ADEH+. * Participant and/or parent guardian must be able to understand and provide informed consent, and fits in one of the following conditions: 1. A history of AD with a history of eczema herpeticum, ADEH+, as diagnosed using the Atopic Dermatitis Research Network Standard Diagnostic Criteria. 2. A history of AD without a history of eczema herpeticum, ADEH-, as diagnosed using Atopic Dermatitis Research Network Standard Diagnostic Criteria, and no first degree relatives with a history of EH. 3. Non-atopic as diagnosed using Atopic Dermatitis Research Network Standard Diagnostic Criteria. Exclusion Criteria: * Inability or unwillingness of a participant to give written informed consent or comply with study protocol * Known or suspected immunosuppression * Severe concomitant illness(es) * Women of childbearing potential not using the contraception method(s) specified in this study (specify), as well as women who are breastfeeding * Known sensitivity to study drug(s) or class of study drug(s) * Patients with severe medical condition(s) that in the view of the investigator prohibits participation in the study (specify as required) * Use of any other investigational agent in the last 30 days