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Published on: 5/21/2025

What Might Cause Back Pain That Shoots Down Both Legs?

Back pain that shoots down both legs may be caused by sciatica or other nerve-related issues in the lower back.

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Explanation

Back pain that travels down the legs is often linked to nerve problems in the lower back. One common cause is sciatica, which happens when the sciatic nerve is irritated or compressed. This nerve runs from the lower back through the hips and down each leg.

Causes of Sciatica:

  • Herniated Disc: A disc in the spine can bulge out and press on the nerve.
  • Spinal Stenosis: This is when the spaces in the spine become narrow and squeeze the nerves.
  • Bone Spurs: These are extra bits of bone that can press on nerves.

Sometimes, severe cases of back pain that affect both legs may be related to a rare condition called cauda equina syndrome. This is a more serious problem where nerves at the end of the spinal cord get compressed, and it needs emergent medical help. If you have back pain with other symptoms like trouble urinating, or numbness around the anus, it is important to see a doctor right away. Always talk to a healthcare professional for the right diagnosis and treatment.

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