Stevens-Johnson syndrome (SJS) is a severe and potentially life-threatening (15% of cases) disease, it is a hypersensitivity complex affecting the skin and the mucous membranes, a severe expression of erythema multiforme (EM) (and so SJS is also called erythema multiforme major).
SJS is characterized by fever, sore throat, and headache leading to the sudden development of circular mucocutaneous lesions that can cover the majority of the skin. These lesions begin as macules and can develop into papules, vesicles, bullae, or urticarial plaques. The most extreme cases are termed Toxic Epidermal Necrolysis Syndrome (TENS) or Lyell's Syndrome , in these cases the entire skin is affected.
Treatment is initially similar to that of patients with thermal burns, and continued care can only be supportive and symptomatic, there is no specific drug treatment (2002).
The cause of SJS is either infections (usually following viral infections such as herpes simplex virus, influenza, mumps, cat-scratch fever, histoplasmosis, Epstein-Barr virus, or similar), drug-induced (valdecoxib, penicillins, barbiturate, sulfas, phenytoin, lamotrigine, nevirapine[1][2]), malignancy-related (carcinomas and lymphomas), or idiopathic (50% of the time)
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