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  • Title: Overlap between maculopapular exanthema and drug reaction with eosinophilia and systemic symptoms among cutaneous adverse drug reactions in a dermatology ward.
    Author: Pinto Gouveia M, Gameiro A, Coutinho I, Pereira N, Cardoso JC, Gonçalo M.
    Journal: Br J Dermatol; 2016 Dec; 175(6):1274-1283. PubMed ID: 27128886.
    Abstract:
    BACKGROUND: Inpatients with cutaneous adverse drug reactions (CADR) with overlapping features between maculopapular exanthema (MPE) and drug reaction with eosinophilia and systemic symptoms (DRESS) were examined. OBJECTIVES: To characterize patients with exanthema and few systemic symptoms not meeting the criteria for DRESS [overlapping MPE-DRESS (MP/DR)]. METHODS: We undertook a comparative analysis of clinical and laboratory features of patients with MPE, MP/DR and DRESS (2008-12). RESULTS: We identified 132 inpatients (85 women/47 men, mean age 64·0 ± 17·7 years) with CADR, 37 with DRESS, 28 with MPE, 34 with MP/DR and 33 with other patterns. There were no significant differences in sex, age or concomitant diseases. Allopurinol was the main cause of DRESS (40·5%) and MP/DR (29·4%); antimicrobials were the main cause in MPE (35·7%). In MP/DR the latency period (18·06 ± 13·17 days) was significantly longer than in MPE but shorter than in DRESS. Although hospitalization time was similar to DRESS (13·26 ± 7·41 days), duration of therapy and follow-up in MP/DR was shorter. Exanthema/erythroderma were frequently associated with facial oedema in MP/DR (73·5%) and DRESS (89·2%) but only in 42·0% of patients with MPE. MP/DR histopathology showed keratinocyte vacuolization and perivascular and interstitial infiltrate of lymphocytes, eosinophils and neutrophils, similar but milder than in DRESS, with less interface dermatitis, exocytosis and spongiosis. DRESS was associated with liver involvement (78·4%) and eosinophilia (78·4%), but only in 64·7% and 11·8%, respectively, of patients with MP/DR. CONCLUSIONS: An overlapping pattern between MPE and DRESS was identified and characterized. There may be a continuum spectrum between MPE and DRESS.
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