A 27-year-old woman presents with fever, widespread targetoid rash, mucosal erosions and ocular involvement after starting lamotrigine 2 weeks ago. She is systemically unwell. What is the most appropriate management?AImmediate cessation of lamotrigine and transfer to a burns or high-dependency unitBContinue lamotrigine and add topical steroidsCTreat with oral antihistamines aloneDDischarge with reassurance that this is a mild drug rashEStart another antiepileptic from the same class immediatelyCheck my answer