When is back pain an emergency?
Last updated September 3, 2026.
Back pain is an emergency when it comes with weakness or numbness in both legs, lost feeling around the genitals or anus, or bladder and bowel changes - that is cauda equina syndrome: call an ambulance and do not drive yourself. Other same-day patterns: back pain after major trauma, with fever or recent infection, severe unrelenting night pain with a cancer history, or pain tearing through to the chest or abdomen. Everything else - the lifting tweak, the thrown-out back, sciatica down one leg - is miserable but not an emergency, and most back pain improves within a few weeks with gentle movement over bed rest. Pymander is a free AI doctor, 24/7 by text, and can check your symptoms against these red flags.
What to do
- Check the saddle area and both legs: numbness there, or bladder and bowel changes, is the ambulance pattern.
- Pair fever with caution: back pain plus fever or recent infection needs same-day care.
- Keep moving for ordinary back pain: gentle activity beats bed rest for recovery.
- Get seen if weeks pass without improvement: persistent pain deserves a workup even without red flags.
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