<>Herniated discs develop as the spinal discs degenerate or grow thinner. The jellylike central portion of the disc bulges out of the central cavity and pushes against a nerve root. Intervertebral discs begin to degenerate by the third decade of life. Herniated discs are found in one-third of adults older than 20 years of age. Only 3% of these, however, produce symptoms of nerve impingement. >
<>Transcutaneous electrical nerve stimulator (TENS) machines are small, battery-powered devices that transmit low-voltage electrical currents through electrodes that are attached to your skin. Considered very safe, TENS machines, according to one theory, work by scrambling the message of pain to the brain — literally blocking it. Another theory suggests that the electrical impulses cause a release of endorphins that override the sensation of pain. Many back pain patients have had success with TENS machines, though their effectiveness has not been clearly proven in controlled studies. Ask your doctor or physical therapist if this therapy might be right for you. >
<>Muscle relaxants: Muscle spasm is not universally accepted as a cause of back pain, and most relaxants have no effect on muscle spasm. Muscle relaxants may be more effective than a placebo (sugar pill) in treating back pain, but none has been shown to be superior to NSAIDs. No additional benefit is gained by using muscle relaxants in combination with NSAIDs over using NSAIDs alone. Muscle relaxants cause drowsiness in up to 30% of people taking them. Their use is not routinely recommended. >
<>I apply a MythBusters approach to health care (without explosives): I have fun questioning everything. I don’t claim to have The Answer for low back pain. When I don’t know, I admit it. I read scientific journals, I explain the science behind key points (there are more than 460 footnotes here, drawn from a huge bibliography), and I always link to my sources. >
<>Poor posture and crookedness is another popular scapegoat — it seems obvious that posture is relevant. Many professionals assume that back pain is some kind of postural problem that you can exercise your way clear of. Unfortunately, the evidence shows that no kind of exercise, not even the most hard-core core strengthening, has any significant effect on low back pain. >
<>There are two kinds of over-the-counter pain relievers that frequently help with back pain: nonsteroidal anti-inflammatory drugs (NSAIDs) and acetaminophen. Both have some side effects, and some people may not be able to take them. Talk to your doctor before taking pain relievers. And don't expect medication alone to solve your pain problem. Studies show you'll probably need more than one type of treatment. >
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