Truely, back pain also known dorsalgia, is pain felt in the back that usually originates from the muscles, nerves, bones, joints or other structures in the spine. Back pain is one of humanitys most frequent complaints. It can be a sign of a serious medical problem, although this is not most frequently the underlying cause. Typical warning signs of a potentially life threatening problem are bowel or bladder incontinence or progressive weakness in the legs. The back pain that occurs after a trauma, such as a car accident or fall may indicate a bone fracture or other injury. It can range from a dull, constant ache to a sudden, sharp pain. Back pain is called chronic if it lasts for more than three months.

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