A nerve block is a medical procedure used to relieve pain by injecting anesthetic near specific nerves. This technique temporarily interrupts the nerve signals that transmit pain sensations to the brain, providing relief for various conditions, including injuries, surgeries, or chronic pain. Nerve blocks can be performed in different areas of the body, such as the spine, arms, or legs. They are often used in conjunction with other pain management strategies and can help reduce the need for pain medications, allowing patients to recover more comfortably and effectively.