Back pain (also known "dorsalgia") is pain felt in the back that usually originates from the muscles, nerves, bones, joints or other structuresin the spine.
The pain can often be divided into neck pain,upper backpain, lower back pain or tailbone pain.It may have a sudden onset or can be a chronic pain;it can be constant or intermittent, stay in one place or radiate to otherareas. It may be a dull ache, or a sharp or piercing or burning sensation. Thepain may be radiate into the arm and hand, in the upper back or in the low back, (and might radiateinto the legor foot)and may include symptoms other than pain, such as weakness, numbness ortingling.
Back pain is one of humanity's most frequent complaints. Acute low back pain(also called lumbago)is the fifth most common reason for physician visits. About nine out of tenadults experience back pain at some point in their life, and five out of tenworking adults have back pain every year.
The spine is a complex interconnecting network of nerves, joints, muscles,tendons and ligaments, and all are capable of producing pain. Large nerves thatoriginate in the spine and go to the legs and arms can make pain radiate to theextremities.