Nearly everyone at some point has back pain that interferes with work, daily activities or recreation. Fortunately, most episodes of low back pain (LBP) go away within a few days. Some take longer or lead to more serious conditions.
As people age, bone strength, muscle elasticity and tone tend to decrease. Pain can occur when, for example, someone lifts something too heavy or overstretches, causing a sprain, strain, or spasm in the muscles or ligaments of the low back. If the spine is overstretched or compressed, cushions between the bones (vertebrae) of the spinal column, called discs, may rupture or bulge outward, putting pressure on the nerves rooted in the spinal cord, resulting in back pain.
Most low back pain follows injury to the back, but pain can also be caused by degenerative disease, such as arthritis, disc disease, osteoporosis and some viral infections. Obesity, smoking, stress, poor physical condition, poor sleeping position, and inappropriate posture may contribute to LBP. Scar tissue can form when the back heals, which is not as strong or flexible as normal tissue. Buildup of scar tissue from repeated injuries weakens the back and can lead to more serious injury.
Occasionally, LBP may indicate a serious medical problem. Pain with fever, loss of bowel or bladder control, when coughing, and progressive weakness in the legs may represent a pinched nerve or more serious problem. A person with severe back pain radiating down the leg should contact a physician immediately to help prevent permanent damage.
Men and women are affected equally. LBP occurs most often between the ages of 30 and 50 years. It’s due in part to aging, but also to a sedentary lifestyle with too little exercise (sometimes too much exercise). The risk of LBP from disc disease or spinal degeneration increases with age. LBP is unusual in pre-teen children, but an overloaded backpack can quickly strain the back and cause muscle fatigue.
Conditions that may cause LBP and require treatment by a physician or other health care provider include (not all-inclusive):
Bulging disc. (also called herniated or ruptured disc). The discs, cushions between vertebral bones, may be compressed, bulging out and placing pressure on nerves with roots in the spinal code.
Sciatica. A herniated or ruptured disc may press on the sciatic nerve, a large nerve rooted in the spinal cord, passing through the pelvis, and radiating down the leg, causing a burning or shock-like pain down the leg, along with pain in the buttocks.
Spinal degeneration. With aging, the discs suffer normal wear and tear.
Spinal stenosis. Congenital narrowing of the bony canal through which the spinal cord passes, may, later in life, squeeze around the circumference of the nerve.
Fibromyalgia. This chronic disorder is characterized by wide-spread musculoskeletal pain, along with fatigue and other symptoms. There are many “tender points,” which are particularly painful when touched. They are concentrated in the neck, upper back, shoulders and hips. Sleep disturbance, morning stiffness and anxiety may also occur with fibromyalgia.
Diagnosis starts with a thorough history and physical. A variety of diagnostic methods are available, including X-ray imaging, discography, magnetic resonance imaging (MRI), CT scanning, boan scans, ultasound imaging, thermography, and others.
A healthier back starts with exercise. Someone who is inactive should start with gentle, low-impact exercises. Speed-walking, swimming, or stationary cycling, can increase muscle strength and flexibility. Yoga can help strengthen and stretch muscles and improve posture.
These are additional tips for a healthier back:
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