Why does acute back pain become chronic?

摘要

Acute episodes of back pain are remarkably common. There is a high natural remission rate, with about 90% of cases resolving within six weeks. For patients with simple backache—acute onset of pain in the back without nerve root symptoms or signs of serious spinal pathology—bed rest is indicated only if the patient is in great pain and unable to stand or walk, and should be only for a short period. Analgesia and early physical activation improve the rate of recovery and allow early return to work.