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In the US, low back pain is one of the most common conditions and one of the leading causes of physician visits. In fact, at least four out of five adults will experience low back pain at some point in their lives.
Ironically, with low back pain the severity of the pain is often unrelated to the extent of physical damage. For example, muscle spasm from a simple back strain can cause excruciating back pain that can make it difficult to walk or even stand, whereas a large herniated disc or completely degenerated disc can actually be completely painless.
Low back pain is typically classified as either acute or chronic:
Acute back pain is short term, generally lasting from a few days to a few weeks. Some acute pain syndromes can become more serious if left untreated.
Chronic back pain is generally defined as pain that persists for more than three months. The pain may be progressive, or may occasionally flare up and then return to a lower level of pain. With chronic low back pain, the exact cause of the pain can sometimes be difficult to determine.
The large nerve roots in the low back that go to the legs and arms may be irritated
The smaller nerves that innervate the spine in the low back may be irritated
The large paired lower back muscles (erector spinae) may be strained
The bones, ligaments or joints may be damaged
The intervertebral disc may be damaged
Sometimes there is a neurological component, such as leg or foot weakness or numbness, that accompanies the low back pain.
It is important to note that many types of low back pain actually have no known anatomical cause; but this doesn’t mean that the pain doesn’t exist. The patient’s pain generator may not be identifiable, but this does not necessarily signify that the pain is all psychosomatic. Actually, an estimated 90% of patients with pain will not have an identifiable cause of their pain.
This article provides a review of the most common types of low back pain and related symptoms. The vast majority of lower back pain conditions will get better with time and can be addressed with conservative treatments, such as osteopathic or chiropractic manipulation, physical therapy, pain medications, etc.
Prior to reviewing common causes of low back pain, it is important to note that there are a few symptoms that indicate the need for emergency surgery.
Sudden bowel and/or bladder dysfunction (cauda equina syndrome)
Progressive weakness in the legs (cauda equina syndrome)
Severe, continuous abdominal and low back pain (see abdominal aortic aneurysm)
People with fever and chills, history of cancer with recent weight loss, or who have just suffered a severe trauma should also seek immediate medical attention.
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By:
Peter F. Ullrich, Jr., MD
May 25, 2007 | Next:
Low back pain from muscle strain