Huang X, Ma Y, Wang W, et al. - Researchers conducted this retrospective study to assess the effectiveness and safety of ultrasound-guided pulsed radiofrequency (PRF) modulation on thoracic dorsal root ganglion (DRG) or intercostal nerve (ICN) for postherpetic neuralgia in aged patients and to provide a theoretical basis for clinical treatment. Based on the needle tip position, the authors divided the elderly patients into two groups: DRG and ICN. PRF therapy is both safe and effective in elderly patients suffering from postherpetic neuralgia. However, PRF treatment in the dorsal root ganglion is superior to that in the intercostal nerve in terms of improving VAS and SF-36 scores in older patients.