alexa A critical reappraisal of the current data on drug-induced linear immunoglobulin A bullous dermatosis: a real and separate nosological entity?


Journal of Clinical & Experimental Dermatology Research

Author(s): Fortuna G, SalasAlanis JC, Guidetti E, Marinkovich MP

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BACKGROUND: Linear IgA disease (LAD) has been associated with a variety of drugs over the past 30 years. OBJECTIVE: To review current literature on all available cases of drug-induced LAD, in order to ascertain whether a close relationship is justified, so that it constitutes a real and separate nosological entity. METHODS: The PubMed database was searched for all articles written in English related to drug-induced LAD published between January 1980 and December 2010. RESULTS: The literature review shows that at least 84 articles were published, describing a total of 103 patients. Of these articles, only 46, from 13 countries, were included in this analysis, with a total of 52 patients: 24 (46.2%) were believed to be induced by vancomycin and 28 (53.8%) by drugs other than vancomycin. Challenge-dechallenge-rechallenge testing protocol was performed on only 6 (11.5%) of 52 patients, of which only 5 showed a positive result, while the Naranjo algorithm was performed on only 2 of them (0.3%). LIMITATIONS: The evidence of this review analysis is based only on case reports. No study on large samples of drug-induced LAD is currently available. CONCLUSIONS: The literature analysis reveals no strong scientific evidence to support the notion that some drugs have induced LAD; therefore in many reviewed cases, we must question whether drug-induced LAD is really the underlying entity. Further and thorough investigations using one of the available algorithms for adverse drug reaction are warranted.

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This article was published in J Am Acad Dermatol. and referenced in Journal of Clinical & Experimental Dermatology Research

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