How the back pain emergency check works
Most back and leg pain is not an emergency, but when the bundle of spinal nerves is being compressed, time decides how much function is kept. This page lists the four signs described for that situation and tallies which of them apply: reduced feeling in the saddle area, being unable to pass urine or leaking without noticing, loss of bowel control or a weaker squeeze at the anus, and weakness in both legs or weakness that keeps getting worse.
If any one of them applies, there is only one conclusion: go to an emergency department without delay. Do not watch it at home and do not wait for a scheduled appointment. Being unable to pass urine, and overflow leaking, are described as signs of a stage that may already be irreversible.
When none applies, this page still does not call the situation safe. The pooled sensitivity of these red flags is reported at 0.19 to 0.43, and the classic findings such as saddle numbness and urinary retention can appear late. No risk score or grade is produced either, because no published weighting exists. Current as of October 2026, and not a medical diagnosis. See a clinician if symptoms persist or worsen, and go straight to an emergency department if any of the items above appears.
Frequently Asked Questions
That does not follow. These four items exist to catch the emergency of compressed spinal nerves, and their sensitivity is reported at 0.19 to 0.43. A clear result slightly raises the chance that this is not that emergency; it rules nothing out.
Go to an emergency department regardless. Pain usually accompanies these signs, but it is not treated here as a condition that changes the conclusion. The page reports your pain status separately and bases the conclusion only on the items.
Weighting symptoms into a score means inventing the weights, and no published weighting exists. The stronger reason is that a low score from a test with low sensitivity reassures the cases it misses and delays their care.