Abstract
Although carbamazepine is the first-line treatment option for trigeminal neuralgia, it may not be sustained long-term. The benefits of carbamazepine are offset by adverse effects that lead to its withdrawal. The alternatives to carbamazepine include gabapentin, pregabalin, and microgabalin. Although used off-label in Japan, baclofen, lamotrigine, intravenous lidocaine, and botulinum toxin type A are also effective. Clinical experience has shown that alternative treatments are less effective than carbamazepine. Therefore, they can be used instead of or in addition to carbamazepine. The adverse effects of drugs include drowsiness, dizziness, rash, bone marrow suppression, and liver dysfunction. Carbamazepine and lamotrigine are particularly likely to cause severe drug eruptions such as Stevens-Johnson syndrome and toxic epidermal necrolysis. Low-dose titration is important to avoid the development of rashes and adverse effects.
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