These nerves now seem to misfire and cause troubling pain. Nociceptors use nerve impulses to send messages to other nerves, which move the messages on to the spinal cord and brain at lightning speed. Pain is usually described as acute or chronic. Acute pain is related to the physical sensations caused by an injury. It can last from a few seconds to many weeks, but it usually goes away when normal healing occurs.
Chronic pain lasts beyond the typical healing time.
With neuropathic pain, the nerve fibers themselves may be damaged or injured. They then send incorrect signals to other pain centers. The pain you feel is real, but the cause is not easy to discover. It can also occur without any known injury or disease. The nerves are sending pain messages, even though there is no identifiable cause for such messages.