title: An 18-month-old boy with a persistent papular eruption.
authors.affiliation: Department of Dermatology, University of Colorado Health Sciences Center, Denver.
authors.forename: P A
authors.initials: PA
authors.lastname: Hogan
authors.forename: J G
authors.initials: JG
authors.lastname: Morelli
authors.forename: W L
authors.initials: WL
authors.lastname: Weston
mesh_terms: D002908:Chronic Disease; D006257:Head; D015616:Histiocytosis, Non-Langerhans-Cell / Q000150:complications / Q000175:diagnosis*; D006801:Humans; D007223:Infant; D008297:Male; D017444:Skin Diseases, Papulosquamous / Q000209:etiology*