While acute pain is a normal sensation triggered in the nervous system to alert you to the possible injury and the need to take care of yourself, chronic page is different. There may have been an initial mishap – sprained back, severe infection, or an ongoing cause of pain such as arthritis, cancer, and ear infection. Still, some people suffer chronic pain in the absence of any past injury or evidence of body damage. Many chronic pain conditions affect older adults. Common chronic pain afflictions include headaches, lower back pain, cancer pain, arthritis pan, and neurogenic pain (pain resulting from damage to the peripheral nerves or the central nervous system itself).