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Updated: Jul 10, 2026

A Standardized Procedure of Dressing Management for Toxic Epidermal Necrolysis
Published on: March 14, 2025
DRESS syndrome caused by efalizumab
J M L White1, C H Smith, A Robson
1Skin Therapy Research Unit, St John's Institute of Dermatology, St Thomas' Hospital, London, UK. jonathan.white@gstt.nhs.uk
Abstract:
We report a case of drug reaction with eosinophilia and systemic symptoms (DRESS) to efalizumab. A 52-year-old man developed a widespread papulovesicular rash after 4 weeks of treatment with efalizumab (1.0 mg/kg/week) for treatment-resistant severe psoriasis. Histology revealed a subepidermal blister with eosinophil-rich inflammatory cell infiltrate. Subsequently, the patient developed high peripheral eosinophilia, abnormal liver function, malaise and fever, all requiring inpatient admission. Efalizumab was discontinued immediately, but the rash persisted for 4 months and was only controlled by oral prednisolone at a dose of 30 mg/day. To our knowledge, this is the first reported case of DRESS caused by efalizumab.
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