{"HLA-B*15:02 and HLA-A*31:01 genetic status may be predictive of a severe cutaneous adverse reaction to carbamazepine. This patient is HLA-B*15:02 positive and HLA-A*31:01 positive and may be at an increased risk of carbamazepine-induced Stevens-Johnson syndrome/toxic epidermal necrolysis (SJS/TEN), drug reaction with eosinophilia and systemic symptoms (DRESS), and maculopapular exanthema (MPE). If the patient is carbamazepine-naive and alternative agents are available, do not use carbamazepine. The latency period for cutaneous adverse drug reactions is short (< 8 weeks); therefore, if the patient has previously used carbamazepine for longer than 3 months without incidence of cutaneous adverse reactions, cautiously consider use of carbamazepine. Please consult a clinical pharmacist for more information."}