<prompt> Drug not causing exanthematous skin eruptionPhenytoinHydrocoisoneAmpicillinPhenylbutazone  <response>: Drugs causing exanthematous eruptions are penicillin, sulfonamides, anticonvulsants, anti tubercular , allopurinol, nevirapine, phenylbutazone. Hydrocoisone is a coicosteroid is used for the treatment of severe drug reactions but will not induce exanthem 