Keywords: AD, atopic dermatitis; CAD, chronic actinic dermatitis; EH, eczema herpeticum; HSV, herpes simplex virus; Ig, immunoglobulin; PCR; PCR, polymerase chain reaction; Staphylococcus aureus; acyclovir; atopic dermatitis; chronic actinic dermatitis; contact dermatitis; eczema herpeticum; eczema molluscatum; herpes simplex virus; polymerase chain reaction; viral culture.