Lower Back Pain

Lower back pain (lumbago) is not a disorder. Its a symptom. It usually refers to a problem with one or more parts of the lower back like:

It can also describe pain caused by a problem with nearby organs, like the kidneys or lungs.

According to the American Associate of Neurological Surgeons, 75 to 80 percent of Americans will experience back pain in their lifetime. Fifty percent of those will have more than one episode. Although it can be painful, in 90 percent of all cases, the pain goes away without surgery. Talk to your doctor if you are experiencing back pack.

To understand the causes of lower back pain it helps to understand the back. Your back is composed of many parts, including:

The lower spine is one of the keys to low back pain. Its made up of:

The most common causes of lower back pain are strain and problems with back structures.

Strained muscles and ligaments often cause back pain. Strain commonly occurs with incorrect lifting of heavy objects and sudden awkward movements. Strain can also result from over-activity. An example is the sore feeling and stiffness that might occur after a few hours of yard work or after playing a sport.

Vertebrae are the interlocking bones stacked on top of one another at the back of the torso or trunk of your body. Disks made of cartilage cushion the area between each vertebra. Disk injuries are a fairly common cause of back pain.

Sometimes these disks can bulge (herniate) or rupture. Nerves can get compressed when this happens. Herniated disks can be very painful. A bulging disk pressing on the nerve that travels from your back down your leg can cause sciatica or irritation of the sciatic nerve. Sciatica can be experienced as a pain, tingling, numbness, or weakness in the leg.

Excerpt from:
Back Pain - Healthline

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