title: [Butterfly rash: no lupus].
abstract: A 61-year-old male patient presented with petechiae on the arms and legs due to a thrombocytopenia of 3 Gpt/l (3000/microl). A butterfly rash on the patient's face suggested a diagnosis of systemic lupus erythematosus (SLE). The thrombocytopenia was due to autoimmune thrombocytopenia. The diagnosis of SLE could be excluded and the butterfly rash attributed to a laminar hemorrhage, an ecchymosis due to the autoimmune thrombocytopenia.
authors.affiliation: Department für Innere Medizin, Innere Medizin IV, Universitätsklinikum Halle, Halle/Saale. margit.zuber@medizin.uni-halle.de
authors.forename: M A
authors.initials: MA
authors.lastname: Zuber
mesh_terms: D003937:Diagnosis, Differential; D003951:Diagnostic Errors / Q000517:prevention & control; D005076:Exanthema / Q000175:diagnosis* / Q000209:etiology*; D005148:Facial Dermatoses / Q000175:diagnosis* / Q000209:etiology*; D006801:Humans; D008180:Lupus Erythematosus, Systemic / Q000150:complications / Q000175:diagnosis; D008297:Male; D008875:Middle Aged; D016553:Purpura, Thrombocytopenic, Idiopathic / Q000150:complications* / Q000175:diagnosis*