BACK
PAIN
The
pain may be have a sudden onset or it can be a chronic pain, it can be felt
constantly or intermittently, stay in one place or refer or radiate to other
areas. It may be a dull ache, or a sharp or piercing or burning sensation.
The pain may be felt in the neck (and might radiate into the arm and hand),
in the upper back, or in the low back, (and might radiate into the leg or
foot), and may include symptoms other than pain, such as weakness, numbness
or tingling.
Back pain is one of humanity's most frequent complaints. In the U.S., acute
low back pain (also called lumbago) is the fifth most common reason for all
physician visits. About nine out of ten adults experience back pain at some
point in their life, and five out of ten working 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
that originate in the spine and go to the legs and arms can make pain radiate
to the extremities.(1)
source
(1) wikipedia