This guide explains peripheral nerve block (PNB) analgesia for patients and families. It covers how PNB works by injecting local anaesthetic near nerves to provide numbness and pain relief for arm or leg surgeries. The document details the procedure using ultrasound guidance, benefits including reduced post-operative pain and faster recovery, potential side effects like temporary numbness and weakness, and possible complications. It also explains when PNB is not suitable and alternative pain management options.