Most people see a chiropractor because they are in pain. About 22 million Americans visit chiropractors annually. Of these, 7.7 million, or 35%, are seeking relief from back pain from various causes, including accidents, sports injuries, and muscle strains. Other complaints include pain in the neck, arms, and legs, and headaches.
As a specialty, pain management deals with two broad categories of pain: intractable pain, and chronic pain. Intractable pain is a term first used by the British after WWII as a clinical definition to designate those soldiers who required morphine for constant pain. It is a useful term to designate patients who are in excruciating and constant pain of such severity that it dominates virtually moment of their existence. Chronic pain is ongoing pain, not usually constant and less severe than intractable pain that persists beyond an expected time frame for healing and hasn't responded to the usual means of pain control measures.