Successful Ultrasound-Guided Erector Spinae Plane Block for Herpes Zoster in the Emergency Department: A Case Report.

BACKGROUND: The varicella zoster virus, which lies dormant in the dorsal root ganglion, can be reactivated as herpes zoster in times of acute stress or immunosuppression. The herpes zoster lesions can be very painful, both at the time of eruption and after healing, as postherpetic neuralgia. During the acute outbreak time period, many patients visit the emergency department (ED) for pain control, often requiring opioids. CASE REPORT: Here, we demonstrate two cases for which an erector spinae plane (ESP) nerve block with ropivicaine was used as an alternative to opioids, resulting in immediate and safe analgesia in the ED. Both patients had lesions across the back that were significantly impairing their daily lives; one with distribution in the thoracic region, one in the lumbar region. WHY SHOULD AN EMERGENCY PHYSICIAN BE AWARE OF THIS?: ESP blocks can offer quick, easy, and effective analgesia in the ED and can be used in place of parenteral or oral analgesia. It also can be used to reduce opioid prescriptions issued from the ED. Further studies can be done to confirm the efficacy of ESP blocks against opioids through prospective trials.