Ancient pain.
In a group of about 1000 patients with chronic pain, approximately 4% had pain of very prolonged duration--25 years or longer. These subjects were similar in general to other chronic pain patients but they did differ significantly in the following: a higher incidence of face and head pain, greater dependency on analgesics and sedatives, more frequent diagnoses of depression, and a greater elevation of nearly all clinical MMPI scales.
Adult↗