An allergy to oxcarbazepine indicates that the patient is allergic to the drug and cannot tolerate it, and needs to stop the drug immediately and switch to another antiepileptic drug. If allergic to oxcarbazepine, carbamazepine tablets are also not recommended because oxcarbazepine is a derivative of carbamazepine and is likely to cause the same allergic reaction. At this point, consider switching to sodium valproate, except in women of childbearing age, which is a broad-spectrum antiepileptic with a lower probability of allergy and less likely to cause a rash, but tends to cause liver function impairment and weight gain. If the treatment with sodium valproate alone is not effective and the monitored blood concentration reaches the normal high limit, a second drug can also be added to the treatment. Currently, the commonly used added drugs are levetiracetam and lamotrigine, the former is more used and has fewer side effects, the latter is prone to rash and is not recommended for use in people who already have allergies.