5 Facts you should know about

Stevens-Johnson syndrome/toxic epidermal necrolysis (SJS/TEN)

A rare and severe skin reaction to certain medications

In the past Stevens-Johnson syndrome and toxic epidermal necrolysis were thought to be two separate conditions, but are now considered part of a spectrum

SJS is at the less severe end of the spectrum, and TEN is at the more severe end

It is considered SJS when skin detachment involves less than 10% of the body surface, and TEN when skin detachment involves more than 30% of the body surface

About 10% of people with SJS die, while about 50% of patients with TEN die

See our full disease profile

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