Small clinical trials have shown that intrathecal methylprednisolone is effective in relieving the pain of refractory postherpetic neuralgia; however, because of risks of corticosteroid-induced arachnoiditis, further confirmation and long-term follow-up is needed. No trials support the efficacy of acupuncture, capsaicin, hypnosis, or transcutaneous electrical nerve stimulation for persistent, unresponsive postherpetic neuralgia.3
- Intrathecal corticosteroid injection.
3. Alper BS, Lewis PR. Treatment of postherpetic neuralgia: a systematic review of the literature. J Fam Pract 2002;51:121-8.
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