stevens johnson syndrome SJS differ from toxic epidermal necrolysis TEN based on 30 percent skin affected related: Dermatology tags: #permanent SJS: less than 10% body surface area SJS/TEN overlap: 10%-30% TEN: >30%1 Links to this note Dermatology stevens johnson syndrome SJS differ from toxic epidermal necrolysis TEN based on 30 percent skin affected Footnotes Dermatologic Emergencies ↩