INTRODUCTION
zoster, asymmetrical dermatomal, Herpes zoster, HZ, rash, pain, PHN, VZV
ZOSTER, VIRUS, PHN, VARICELLA, HERPES ZOSTER, SKIN LESIONS
Herpes zoster (HZ) is caused by the reactivation of latent varicella–zoster virus (VZV) and has an asymmetrical dermatomal rash and synchronous occurrence of skin lesions.To date, pulsed radiofrequency (PRF) has been an effective option for pain control and the prevention of PHN. Kim et al.Although PRF can offer pain relief, it faces some problems. Ding et al.It has been shown that PRF can reduce HZ‐related pain, but the poor efficacy of the treatment in some patients was quite confusing. At present, studies have demonstrated that needle tip position was significantly related to treatment effects.