Introduction: To better individualize drug hypersensitivity reaction, Bocquet et al. have recently called this adverse drug reaction DRESS (Drug Rash with Eosinophilia and Systemic Symptoms).
Exegesis: We report two cases of DRESS and highlight the main characteristics of this syndrome. Two patients presented severe febrile skin eruption following drug intake (carbamazepine or sulfazalazine), with hypereosinophilia and hepatitis. All symptoms resolved after drug withdrawal and corticosteroid therapy. DRESS syndrome is an idiosyncratic reaction characterised by febrile eruption, occurring 2 to 6 weeks after the beginning of the treatment, accompanied by systemic symptoms and biological abnormalities (hypereosinophilia, hepatitis). Some complications can occur. This syndrome can be fatal. Numerous drugs can be responsible for this reaction to medication. The physiopathology has not yet been elucidated, and the treatment is not codified, but the triggering agent must immediately be stopped. Corticotherapy is sometimes used.
Conclusion: It is important to recognize this entity recently named DRESS syndrome because it can mimic other pathologies, is potentially serious, and because withdrawal of the incriminating drug is imperative.