Toxic epidermal necrolysis (TEN), also known as Lyell's syndrome, is a rare, life-threatening and wide-spread exfoliative disease of the skin and mucous membrane that is most commonly drug-induced. We retrospectively reviewed the charts of 17 patients who suffered from TEN in Farhat Hached University Hospital, Sousse, Tunisia over a 19-year period from January 1994 to January 2013. Causality for suspected drugs was assessed by means of the Naranjo adverse drug reaction (ADR) probability scale. Antibiotics, mainly 脽-lactams, were the most common implicated drugs, followed by nonsteroidal anti-inflammatory drugs, anticonvulsants, and allopurinol. The interval between drug intake and onset of the first symptom ranged between few hours and 19 days with a mean period of 6.11 days. There was extensive skin detachment, averaging 66.17% of total body surface area (range 40-95%). The most major complication was infection, occurring in 9 patients (53%). Seven patients died with a mortality rate of 41%.
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