Abstract:Objective: To investigate the efficacy of radiofrequency thermocoagulation therapy (RFT) combined with gabapentin (GBP) on primary trigeminal neuralgia (PTN) and its impacts on oxidative stress and immune function in patients. Methods: A total of 118 PTN patients who received treatment in Xingtai Hospital of Traditional Chinese Medicine were selected as the subjects and assigned into RFT group and GBP group according to the random number table method. The RFT group received RFT, while the GBP group received GBP in addition to the RFT group. The efficacy, pain level, oxidative stress, immune function, quality of life, and adverse reactions were compared between the two groups. Results The total effective rate of GBP group was 91.53%, higher than the 76.27% of the RFT group(P<0.05). Pain scores in GBP group were lower than those in RFT group at 2 weeks, 4 weeks and 1 month, 3 months after treatment (P<0.05) After treatment, malondialdehyde (MDA) level in GBP group was lower than that in RFT group (P <0.05), glutathione peroxidase (GSH Px), superoxide dismutase (SOD), CD3+, CD4+, CD4+/CD8+ and scores of quality of life in GBP group were higher than those in RFT group (P<0.05). The total incidence of adverse reactions in the RFT group and GBP group was 22.03% and 25.42%, respectively, with no prominent difference (P>0.05). Conclusion: RFT combined with GBP has good clinical efficacy in treating PTN patients, it can prominently alleviate pain, reduce oxidative stress levels, decrease neuropathic pain, improve immune function, inhibit disease progression, improve quality of life, and has high safety.