Definition: A persistent complaint of pain or body problem without a physical cause, or the impairment is greater than would be expected from the physical findings. These people are not 'lying' about or making up their illness; they believe that they are
There are 2 types of pain: acute and chronic. Acute pain doesn't last long and usually goes away as your body heals. Chronic pain lasts at least 6 months after your body has healed.
Pain disorder: In this disorder there is pain in the area of a clinical condition. It leads to the impression of the clinician that the pain is out of proportion with regard to the clinical findings.