Written by Ansu Susan Kuriakose, BPT · Clinically reviewed by Jasmal K, BPT, MPT · Last reviewed 5 October 2026

When is back or neck pain an emergency? The red flags to know

Back and neck pain is extremely common, and the vast majority of it is not caused by anything dangerous. Serious causes such as fractures, infections, tumours or severe nerve compression are uncommon, making up well under 1 in 100 cases of low back pain seen in primary care.

But "uncommon" isn't "never." A small number of symptoms, often called red flags, mean you should see a doctor urgently or go straight to a hospital emergency department instead of waiting for a physiotherapy appointment. This guide explains what they are, what they may mean, and what to do.

A physiotherapist guiding a patient through a rehabilitation exercise

Go to a hospital emergency department now if you have back pain or sciatica with any of these

These can be signs of cauda equina syndrome, where the bundle of nerves at the bottom of the spinal canal is compressed. It's rare, but it's an emergency: without prompt treatment it can cause permanent loss of bladder, bowel or sexual function, or leg weakness.

  • Numbness or pins and needles between your inner thighs, around your genitals, or around your bottom (sometimes called "saddle" numbness)
  • Altered feeling when you wipe after using the toilet
  • New difficulty passing urine, or difficulty starting or stopping the flow
  • Loss of bladder control, leaking urine, or not knowing whether your bladder is full or empty
  • Loss of bowel control, or reduced feeling when you open your bowels
  • New changes in sexual function, such as loss of sensation in the genitals or difficulty getting an erection
  • Leg weakness that's getting worse, or sciatica that has spread to both legs

Cauda equina syndrome can only be confirmed or ruled out with an MRI scan, which needs to be done as an emergency. Don't wait to see whether these symptoms settle.

Other warning signs: see a doctor urgently

These symptoms don't always mean something serious. But they need a doctor's assessment quickly, usually the same day, before any physiotherapy or spinal decompression.

Signs of possible pressure on the spinal cord in the neck

Gradual narrowing of the spinal canal in the neck can press on the spinal cord itself, a condition called cervical myelopathy. It's often missed early because its signs are easy to put down to age. See a doctor promptly if neck pain or stiffness comes with:

  • Clumsy hands: dropping things, difficulty with buttons, or changes in your handwriting
  • Numbness or tingling in both hands
  • Feeling unsteady on your feet, or falling more often
  • An electric-shock feeling down your spine or into your arms or legs when you bend your neck forward

Signs of a possible spinal fracture

  • Back pain after a serious fall or road accident
  • Sudden, severe pain in the centre of your spine after a minor fall or even lifting something, especially if you have osteoporosis, are older, or have taken steroid medicines for a long time
  • A visible change in the shape of your spine, or one spot on the spine that is very tender to touch

Signs of a possible spinal infection

  • Back or neck pain with fever, chills or feeling generally unwell
  • Pain that starts after a recent infection, such as a urinary infection, or after a medical procedure
  • Back pain if your immune system is weakened, for example from HIV, chemotherapy, long-term steroids or other immunosuppressant medicines

Spinal infections include tuberculosis (TB) of the spine, which is still seen in India and often begins with back pain.

Signs of a possible tumour

  • A past history of cancer, especially breast, lung, prostate, kidney or thyroid cancer, with new back pain
  • Unexplained weight loss
  • Pain at night that wakes you or stops you sleeping
  • Constant pain that doesn't ease when you lie down or change position
  • Back pain starting for the first time after age 50, especially with any of the signs above

When the pain may not be coming from your spine

Some serious conditions show up as back or neck pain:

  • Upper back, chest, jaw or arm pain with breathlessness, sweating or nausea can be a heart problem. Call 112 or go to an emergency department.
  • Sudden, severe pain in the back or abdomen, particularly in older adults, can be a sign of a problem with the aorta, the body's main blood vessel. This is an emergency.

A sense of proportion

Red flags are a reason to get checked, not a reason to panic. Most people with one of these signs turn out not to have a serious condition. Research shows that most single red flags aren't very accurate on their own; a past history of cancer is one of the more reliable. That's why they're used to decide who needs a closer look, not to make a diagnosis.

If you're unsure, it's always reasonable to get checked.

How Maana Spine screens for red flags

Every Maana Spine DTX™ program starts with a spine assessment, and checking for red flags is part of it. Your physiotherapist asks about these symptoms and carries out neurological tests of your strength, sensation and reflexes.

If anything suggests a serious cause, we'll tell you clearly, and refer you to a doctor or hospital for further tests before any treatment begins. We don't start spinal decompression or other treatment until serious causes have been ruled out.

What happens at your spine assessment

If none of these apply to you

Most back and neck pain improves with time and the right care. It's a good idea to get assessed if your symptoms are getting worse, if they've lasted more than two weeks, if severe pain hasn't eased within a week, or if new symptoms develop.

A spine assessment can help you understand what's causing your pain and what will help.

Book a Spine Assessment · or call +91 99950 09403

Frequently asked questions

When should I go to hospital for back pain?

Go to a hospital emergency department straight away if back pain or sciatica comes with numbness around your genitals or bottom, new problems controlling your bladder or bowels, new sexual problems, or leg weakness that's getting worse. Also go if back pain follows a serious fall or accident, or if severe back or abdominal pain comes on suddenly.

What is cauda equina syndrome?

Cauda equina syndrome happens when the nerves at the bottom of the spinal canal are compressed, most often by a large disc herniation. It's rare but it's a medical emergency, because without prompt treatment it can cause permanent bladder, bowel, sexual or leg problems. It's confirmed with an emergency MRI.

Is back pain at night a red flag?

It can be, if the pain is constant, wakes you from sleep, and doesn't ease when you change position, especially with weight loss, fever or a history of cancer. Many people with ordinary back pain are uncomfortable at night because of how they lie, which is different.

Is neck pain with tingling hands serious?

Tingling in one hand is often caused by an irritated nerve in the neck, which is common and treatable. But see a doctor promptly if tingling affects both hands, or comes with clumsiness, dropping things or feeling unsteady on your feet, because these can be signs of pressure on the spinal cord.

Can physiotherapy make a red-flag condition worse?

That's why screening matters. At Maana Spine, your assessment checks for red flags first, and we refer you for medical care before any treatment if a serious cause is suspected.

I have one of these symptoms but feel fine otherwise. Should I still get checked?

Yes. Most people with a single red flag don't have a serious problem, but the only way to know is to have it checked by a doctor.

References

  1. Royal Free London NHS Foundation Trust. Cauda equina syndrome: patient information leaflet. royalfree.nhs.uk/patients-and-visitors/patient-information-leaflets/cauda-equina-syndrome
  2. Getting It Right First Time (GIRFT), NHS England. National suspected cauda equina syndrome pathway, March 2026. gettingitrightfirsttime.co.uk
  3. Buckinghamshire Healthcare NHS Trust. Cauda equina syndrome: patient advice sheet, 2024. buckshealthcare.nhs.uk
  4. NHS Lanarkshire. Low back pain pathway (based on NICE Clinical Knowledge Summaries). rightdecisions.scot.nhs.uk
  5. Patient.info (professional reference). Low back pain and sciatica. patient.info/doctor/history-examination/low-back-pain-and-sciatica
  6. Verhagen AP, et al. Red flags presented in current low back pain guidelines: a review. European Spine Journal, 2016. pubmed.ncbi.nlm.nih.gov/27376890
  7. Royal College of Emergency Medicine (RCEMLearning). Acute lower back pain. rcemlearning.co.uk/reference/lower-back-pain
  8. Davies BM, et al. Degenerative cervical myelopathy. BMJ, 2018. ncbi.nlm.nih.gov/pmc/articles/PMC6074604
  9. Diagnostic utility of red flags for detecting spinal malignancies in patients with low back pain: a scoping review. Journal of Clinical Medicine, 2025. mdpi.com/2077-0383/14/20/7174