Abstract:Objective: To study the clinical effect of ultrasound-guided pulsed radio frequency (PRF) in the treatment of acute herpes zoster and postherpetic neuralgia (PHN) in the first branch of the trigeminal nerve (V1). Methods: 46 cases of herpes zoster V1 were selected. Patients were divided into 2groups according to the timing of PRF after zoster onset: an early PRF group (within 30 days) and a PHN PRF group (more than 90 days). The first branch of trigeminal nerve was treated by pulsed radiofrequency.VAS was used to evaluate the pain score before treatment, 1 week, 4 weeks and 12 weeks after treatment. To evaluate the efficacy of PRF, the tramadol and pregabalin doses were recorded at 1, 4 and 12 weeks after PRF. The clinical efficacy was evaluated by apparent efficiency. Results: There was no significant difference in VAS score between the two groups before treatment (P > 0.05), but the VAS score of early PRF group was significantly lower than that of PHN-PRF group at 1, 4 and 12 weeks after treatment (P < 0.05). At the first week, the fourth week and the 12th week after the treatment, the tramadol or pregabalin dosage in the early PRF group was significantly lower than that in the PHN-PRF group (P < 0.05). The effective rates of early PRF group were 92.31%, 96.15% and 96.15% respectively, which were significantly higher than PHN-PRF group (65.00%, 75.00% and 75.00%) (P < 0.05).Conclusion: PRF is an effective method for the treatment of V1 acute herpes zoster and PHN, especially for the early patients with V1 herpes zoster, it can significantly reduce the pain and effectively prevent the occurrence of neuralgia after V1 herpes zoster.