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Warning changes: seek local help

Severe low-back pain extending into a leg with new bladder, bowel or sexual-function disturbance, or new perineal/saddle numbness, requires immediate local assessment for possible cauda equina syndrome. Do not wait for every feature or for complete loss of control.1 New major or progressing weakness needs urgent assessment.2 New walking problems, sudden loss of hand coordination or bladder/bowel control changes with concerning neck or limb symptoms can be emergencies: use local emergency services.3

Describe what has changed

A clinician needs to know where pain travels, whether function or strength is changing, when symptoms began and how they affect daily life. Pain centered in the back or neck is different from pain following a limb pattern. Root symptoms differ from cord dysfunction, and the presence of both is possible. A clear description of change is more useful than selecting a label before assessment.4

The examination may assess strength, sensation, reflexes, walking and coordination. These findings are interpreted together, not through a single home maneuver. Other conditions can resemble disc-related symptoms; new or atypical features can prompt investigation for an alternative cause. Trauma, infection, cancer and thoracic or childhood presentations need their own pathways.5

Imaging answers a clinical question

NICE NG59 does not recommend routine imaging for uncomplicated low-back pain with or without sciatica in a nonspecialist setting. In specialist care, imaging should be considered when its result is likely to change management. That lumbar guidance is not a reason to defer assessment of neurological deterioration.5

When MRI is used, the important relationship is between symptoms, examination and the location of a possible cause. A bulge is not synonymous with localized herniation. Protrusion, extrusion and sequestration describe displaced material; degeneration and stenosis describe other structural findings. The joint lumbar nomenclature document explicitly separates morphology from symptoms and treatment indications.6

Respect uncertainty

Several findings on a report may make the explanation less certain. That is a reason to clarify the clinician's reasoning, not to deny the person's experience. Conversely, a dramatic-looking finding is not automatically a surgical indication. An older report cannot rule out a new problem that developed afterward.

For suspected cervical cord dysfunction, clinical status and imaging must be assessed together. The 2026 AO Spine critical review found insufficient support for routinely using MRI parameters alone to predict deterioration or choose timing in mild DCM.7 Useful appointment questions include which findings match the symptoms, which possibilities remain open, what would change the plan and how new deficits should be reported.

References

  1. NICE. NG127: Suspected neurological conditions. Adult recommendations 1.7 and 1.10. Source ↩
  2. Costa F et al. Role of surgery in primary lumbar disk herniation: WFNS recommendations. World Neurosurg X. 2024;22:100276. Source ↩
  3. NHS. Cervical spondylosis: symptoms, urgent assessment and treatment. Source ↩
  4. Fehlings MG et al. AO Spine/CSRS DCM guideline. Global Spine J. 2017;7(Suppl):70S–83S. Source ↩
  5. NICE. NG59: Low back pain and sciatica in over 16s. Recommendations (updated 2020). Source ↩
  6. Fardon DF et al. Lumbar disc nomenclature: version 2.0. Spine J. 2014;14:2525–2545. DOI ↩
  7. Neal CJ et al. Mild DCM: contemporary concepts. Global Spine J. 2026 (online September 24). doi:10.1177/21925682261492222. PubMed ↩