Background: Manifestations similar to DRESS syndrome (drug rash with eosinophilia and systemic symptoms) may be induced by nevirapine.
Case reports: Three patients developed skin rash and general signs of liver dysfunction during the first 5 weeks after starting nevirapine. Laboratory tests showed elevated eosinophil counts and signs of inflammation simulating severe infection.
Discussion: The incidence of DRESS syndrome is probably underestimated. No standard treatment has been proposed. In our 3 patients, parenteral corticosteroid therapy was successful, leading to a rapidly favorable clinical course although liver tests took longer to return to normal.