title: Dermatographic fixed-drug eruption: another cause of pseudo-Darier's sign.
abstract: A 7-year-old boy from El Salvador presented with several well-demarcated 3- to 4-cm round to oval, grey-brown patches on his shoulder and trunk (Figure a) that appeared simultaneously about 1 year previously. The lesions were red initially and thought by the patient's mother and primary care physicians to be bruises, but a hematologist's evaluation was unremarkable. The erythema soon subsided, leaving persistent light-brown spots on the torso. The patient was otherwise asymptomatic.
authors: Georgetown University School of Medicine, Washington DC, USA.
authors: Michael T
authors: MT
authors: Cosulich
authors: Georgetown University Medical Center, Washington, DC, USA.
authors: Scott A
authors: SA
authors: Norton
mesh_terms: D002648:Child; D007644:Darier Disease / Q000175:diagnosis* / Q000473:pathology; D003875:Drug Eruptions / Q000175:diagnosis* / Q000473:pathology; D004544:El Salvador / Q000208:ethnology; D006801:Humans; D008297:Male