Extensive eczema herpeticum in a previously well child.

Background: Eczema herpeticum, also known as Kaposi varicelliform eruption, is a potentially life-threatening disseminated cutaneous viral infection. In the majority of cases, this condition develops as a complication in patients with atopic dermatitis. However, it may arise in a wide spectrum of pre-existing skin conditions, including psoriasis, seborrheic dermatitis, contact dermatitis, cutaneous T cell lymphoma, pemphigus vulgaris, and others.