Retrospective analysis of Stevens–Johnson syndrome and toxic epidermal necrolysis in 87 Japanese patients – Treatment and outcome

BackgroundStevens–Johnson syndrome (SJS) and toxic epidermal necrolysis (TEN) are rare but severe adverse drug reactions with high mortality.MethodsTo present the clinical characteristics of SJS and TEN in Japan and evaluate the efficacy of treatments, we retrospectively analyzed cases of SJS and TEN treated in 2 university hospitals during 2000–2013.ResultsFifty-two cases of SJS (21 males and 31 females; average age, 55.1 years) and 35 cases of TEN (17 males and 18 females; average age, 56.6 years) were included in this study. Twenty-eight cases of SJS (53.8%) and all cases of TEN were caused by drugs. Hepatitis was the most common organ involvement in both SJS and TEN. Renal dysfunction, intestinal disorder, and respiratory disorder were also involved in some cases. The major complication was pneumonia and sepsis. All cases except for 3 cases were treated systemically with corticosteroids. Steroid pulse therapy was performed in 88.6% of TEN. Plasmapheresis and/or immunoglobulin therapy was combined with steroid therapy mainly in TEN after 2007. The mortality rate was 6.9% and the rates for SJS and TEN were 1.9% and 14.3%, respectively. These were much lower than predicted mortality according to a severity-of-illness scoring system for TEN prognosis (SCORTEN) score. When comparing the mortality rate between 2000–2006 and 2007–2013, it was decreased from 4.5% to 0.0% in SJS and from 22.2% to 5.3% in TEN.ConclusionsTreatment with steroid pulse therapy in combination with plasmapheresis and/or immunoglobulin therapy seems to have contributed to prognostic improvement in SJS/TEN.