Ultrasound-guided intercostal nerve blocks for acute zoster pain: a retrospective, propensity score-matched, non-inferiority study

US-guided ICNBs were non-inferior to TPVBs in alleviating ZAP and preventing post-herpetic neuralgia, while also demonstrating a favorable safety profile. These findings suggest that the ICNB technique might be a promising alternative for managing ZAP.