Indian Journal of Dermatology
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Year : 2019  |  Volume : 64  |  Issue : 3  |  Page : 251

The effect of interventional pain management on treating postherpetic neuralgia

Departments of Anesthesiology, Tianjin Medical University General Hospital, Tianjin Research Institute of Anesthesiology, Tianjin 300052, PR China

Correspondence Address:
Dr. Guolin Wang
Department of Anesthesiology, Tianjin Medical University General Hospital, Tianjin Research Institute of Anesthesiology, Tianjin 300052
PR China
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/ijd.IJD_130_18

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Background: Herpes zoster (HZ) is identified to induce postherpetic neuralgia (PHN) which is difficult to cure. PHN-related pain brings patients not only physical discomfort but also mental depression and anxiety. Currently, the main purpose of PHN treatment is to reduce patients' pain. Now treatment combining some international pain management and drug therapy has come up. Aims and Objective: This study aims to evaluate the effect of interventional management through meta-analysis. Materials and Methods: Interventional pain management was defined as a direct strategy on nerve through physical or chemical method. Drug therapy was always regarded as control. Potentially relevant articles were searched in PubMed, EMBASE, and the Cochrane Library through key words by consensus. Pain severity was evaluated by a validated visual analog scale (VAS). Moreover, the weighted mean difference was used to calculate pain intensity. Some trails recorded the efficiency rate and odds ratio was used to calculate the effectiveness. Statistical heterogeneity was measured by the value of I2, and when statistical I2 > 50%, subgroup analysis was used to seek for the source of heterogeneity. Results: Pulsed radiofrequency (PRF) combined with medication reduced the VAS scores at 1, 2, 4, and 8 weeks after treatment. The nerve block combined with medication reduced VAS scores at 8 weeks after treatment, but there is no difference between the results of medication alone at 1, 2, and 4 weeks after treatment. Conclusion: The interventional mean of PRF combined with medication has a good effect on PHN. The effect of nerve block combined with medication on PHN seems to be the same as that of medication alone. Besides, a long period with high-quality randomized controlled trial should be done to verify the results.

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