title: Clinical problem-solving. No respecter of age--a previously healthy 65-year-old woman went to her primary care physician in late August, seeking evaluation of a "spot" that had appeared on her right leg 3 weeks earlier.
authors.affiliation: Division of General Internal Medicine, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, USA. drmartin@jhmi.edu
authors.forename: Don R
authors.initials: DR
authors.lastname: Martin
authors.forename: D William
authors.initials: DW
authors.lastname: Schlott
authors.forename: John A
authors.initials: JA
authors.lastname: Flynn
mesh_terms: D000368:Aged; D000914:Antibodies, Viral / Q000097:blood*; D018771:Arthralgia / Q000209:etiology*; D001168:Arthritis / Q000821:virology*; D002637:Chest Pain / Q000209:etiology; D003937:Diagnosis, Differential; D016731:Erythema Infectiosum / Q000150:complications / Q000175:diagnosis*; D005260:Female; D006801:Humans; D007074:Immunoglobulin G / Q000097:blood; D007075:Immunoglobulin M / Q000097:blood; D007866:Leg / Q000473:pathology*; D016732:Parvovirus B19, Human / Q000276:immunology*; D013585:Synovitis / Q000821:virology
chemical_list: D000914:Antibodies, Viral; D007074:Immunoglobulin G; D007075:Immunoglobulin M