Erythema Multiforme

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Erythema Multiforme

Toxic Epidermal Necrolysis

most severe

How to differentiate between SJS and TEN?

amount of BSA

between 10-30% is grey area

< 10% is SJS/erythema multiforme

> 30% BSA is TEN

Erythema Multiforme Major/SJS

< 10% BSA

mucosal involvement

Nikolsky sign

Erythema Multiforme Minor

least severe

No mucosal involvement

Target lesions