A nerve block is a medical procedure that involves injecting a local anesthetic near specific nerves to block pain signals from reaching the brain. This technique is often used for pain management during surgeries or for chronic pain conditions. By targeting the nerves responsible for sensation in a particular area, nerve blocks can provide significant relief without the need for general anesthesia. Nerve blocks can be performed in various locations, such as the spine, shoulder, or knee, depending on the area needing treatment. They are commonly used in conjunction with other pain management strategies, such as physical therapy or medication, to enhance overall patient comfort and recovery.