Table 1.

Drugs commonly causing SJS/TEN.

Group	Drugs
Antibacterials	Sulphonamides, penicillins, cephalosporins, quinolones, vancomycin
Anticonvulsants	Phenytoin, carbamazepine, phenobarbitone, valproate, lamotrigine
NSAIDs	Aspirin, piroxicam, diclofenac, phenylbutazone
Antiretrovirals	Nevirapine, protease inhibitors, abacavir
Antituberculous	Isoniazid, ethambutol
Antigout	Allopurinol
Antimalarials	Chloroquine

NSAIDs = non-steroidal anti-inflammatory drugs; SJS = Stevens–Johnson syndrome; TEN = toxic epidermal necrolysis.