<prompt> A 3 months old male infant developed otitis media for which he was given a course of Co-trimoxazole. A few days later, he developed extensive peeling of the skin; there were no mucosal lesions and the baby was not toxic. The most likely diagnosis is:Toxic epidermal necrolysisStaphylococcal scalded skin syndromeSteven Johnsom syndromeInfantile pemphigus  <response>: B i.e. Staphyloccocal Scalded Skin Syndrome - SJS and TEN are most severe form of EM and so may show atypical target lesions. TEN is caused by phenytoin, penicillin sulfa drugsQ but there is no risk with aspirin sulfonyl ureaQ. 