DRESS syndrome

**Definition:** DRESS syndrome (Drug Rash with Eosinophilia and Systemic Symptoms) is a hypersensitivity reaction characterised by a generalised skin rash, fever, eosinophilia, lymphocytosis and visceral involvement (hepatitis, nephritis, pneumonitis, pericarditis and myocarditis) and, in some patients, reactivation of human herpes virus 6.

**Inclusions:** - Drug-induced hypersensitivity syndrome