![]() MRI. Large magnets, radio waves, and a computer make detailed images of organs and structures in your body.X-ray. Electromagnetic energy beams make images of internal tissues, bones, and organs onto film.How is sciatica diagnosed?Īlong with a complete medical history and physical exam, tests for sciatica may include: Always see your healthcare provider for a diagnosis. The symptoms of sciatica may look like other conditions or health problems. Pain that extends from your buttock down to your foot.Lower back pain that radiates or spreads down your buttock and the back of one thigh.These are the most common symptoms of sciatica: Sometimes, the cause for your sciatica can’t be identified. Health conditions such as diabetes or Lyme disease can cause symptoms of sciatica. Other reasons for pressure on your sciatic nerve may include: Usually, sciatica is caused by a herniated (or bulging) disk in your spine that presses on your sciatic nerve. ![]() It is also the largest nerve in your entire body. Your sciatic nerve is the main nerve in your leg. This nerve extends from the back of your pelvis down the back of your thigh. Sciatica, also called lumbar radiculopathy, is a pain that originates along your sciatic nerve.
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