The effects of temporary spinal cord stimulation (or spinal nerve root stimulation) on the management of early postherpetic neuralgia from one to six months of its onset.

Objective: We examined the efficacy of temporary spinal cord stimulation involving the insertion of only a needle and quadripolar lead into the epidural space and applied using an extracorporeal stimulation generator for a few weeks of early postherpetic neuralgia from one to six months of its onset.
Materials and Methods: Temporary spinal cord stimulation was applied in 33 patients with postherpetic neuralgia and in whom epidural block was effective. Temporary spinal cord stimulation was applied over seven days, and analgesic effects was evaluated based on visual analog scale (VAS) values before and after one, three, and six months following treatment. An analgesic effect was defined as a decrease of over 50% in the VAS value compared with before treatment.
Results: VAS values decreased significantly from 68.1 mm (standard deviation [SD]± 15.2) before treatment to 37.5 mm (SD ± 20.4) after one month, to 38.0 mm (SD ± 18.7) after three months, and to 35.0 mm (SD ± 21.3) after six months. In 21/33 (63.6%) cases, an analgesic effect, defined as a decrease in the VAS value of greater than 50%, was observed one month after treatment, in 20/33 (60.6%) cases such an effect was observed three months after treatment, and in 21/33 (63.6%) cases the effect was still observed six months after treatment.
Conclusions: Temporary spinal cord stimulation is an effective analgesic method for early postherpetic neuralgia from one to six months of its onset.
(© 2012 International Neuromodulation Society.)