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European Journal of Dermatology

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Drug-induced exanthemata: a source of clinical and intellectual confusion Volume 20, issue 3, May-June 2010

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Authors
Dermatopharmacology Unit, Division of Infection, Inflammation and Immunity, University of Southampton School of Medicine, Sir Henry Wellcome Laboratories, South Block, Southampton General Hospital, Southampton SO16 6YD, United Kingdom, Allergy Unit, Dermatology University Hospital Basel, Petersgraben 4, CH-4031, Basel, Switzerland

Drug rashes are a common problem occurring in patients across the whole spectrum of medical specialties. They are a source of confusion not only to the wider medical community but even among dermatologists there is lack of clarity about how to describe, classify and approach them. Common patterns of drug rash, apart from the “classical” maculo-papular eruptions (MPE), include urticarial wheals and urticaria-like rashes which it is important to distinguish, because of differences in pathogenetic mechanisms, therapeutic response and prognostic significance. The purpose of this article is to try to offer some structure both from the point of view of clinical classification and also of underlying mechanisms.