title: Skin lesions: when to suspect systemic causes.
authors.affiliation: Department of Dermatology, Cleveland Clinic Foundation, OH 44195.
authors.forename: T N
authors.initials: TN
authors.lastname: Helm
mesh_terms: D004893:Erythema Nodosum / Q000175:diagnosis; D006561:Herpes Simplex / Q000175:diagnosis; D006801:Humans; D010392:Pemphigus / Q000175:diagnosis; D012871:Skin Diseases / Q000175:diagnosis*; D012878:Skin Neoplasms / Q000175:diagnosis* / Q000556:secondary