Drug reaction with eosinophilia and systemic symptoms: Analysis of cutaneous phenotype as a prognosis factor

Study objective. - The DRESS syndrome (drug reaction with eosinophilia and systemic symptoms) is a severe and potentially fatal toxidermia due to various visceral involvements. Identifying factors predisposing to serious complications is essential for clinical and therapeutic management. This study aims to analyze the cutaneous presentation of DRESS and its role as a prognostic factor. Patients and methods. - This is a retrospective, descriptive, and analytical study conducted over nine years at the dermatology department in Fes, including all hospitalized DRESS cases. Results. - The maculopapular rash was the most frequent phenotype (49.3%), followed by erythroderma, morbilliform exanthem, and polymorphous erythema-like rash. In all, 52.8% of patients had renal involvement and 45.8% had hepatic involvement, while 81.9% exhibited hypereosinophilia. The maculopapular rash and erythroderma were more associated with internal organ involvement, although no significant statistical correlation could be demonstrated. Allopurinol was the most implicated drug in 51.4% of the cases. No correlation was found between the type of medication and the cutaneous presentation. In all, 8.3% of the patients died, primarily those with erythroderma (15.8%). Conclusion. - Our study demonstrated that maculopapular rash and erythroderma are the most common presentations and are most associated with internal organ complications, with a more unfavorable prognosis for erythrodermic cases. (c) 2024 Societe francaise d'allergologie. Published by Elsevier Masson SAS. All rights are reserved, including those for text and data mining, AI training, and similar technologies.