title: Prominent pruritic periumbilical papules.
authors.forename: M S
authors.initials: MS
authors.lastname: Rothstein
mesh_terms: D002648:Child; D017449:Dermatitis, Allergic Contact / Q000175:diagnosis*; D003876:Dermatitis, Atopic / Q000175:diagnosis*; D003937:Diagnosis, Differential; D006801:Humans; D006968:Hypersensitivity, Delayed / Q000139:chemically induced* / Q000175:diagnosis; D009532:Nickel / Q000009:adverse effects*; D011537:Pruritus / Q000209:etiology*; D014472:Umbilicus / Q000473:pathology
chemical_list: D009532:Nickel