A 2018 clinical review in The BMJ, led by Cambridge neurosurgery researchers, opens with a case. A 54-year-old man has had a stiff neck for about a year. What bothers him is his hands. His fingers are numb, buttoning a shirt has become hard, and an operation for carpal tunnel syndrome changed nothing. Lately he has become unsteady, has fallen, and has started using a walking stick.
His neck was the source all along. Wear-related changes in his cervical spine were squeezing his spinal cord, a condition called degenerative cervical myelopathy, and he was sent for surgery.
Neck pain in general is vastly more common than his problem. Global Burden of Disease researchers put the number of people worldwide with neck pain in 2020 at 203 million, more often women, with rates peaking between ages 45 and 74. For that common kind, scans have a modest role and can mislead. The decisions that matter sit in a few specific situations: an injury, pain shooting down an arm, and the quiet pattern in that man’s hands.
What a scan can and cannot tell you
The American College of Radiology publishes appropriateness criteria, its ratings of which imaging test fits which situation. Its current version for neck pain without trauma, revised in 2024 and published in 2025, is cautious. For new or worsening neck pain with no arm symptoms and no red flags, it puts a plain X-ray in its middle category, may be appropriate, and rates MRI usually not appropriate. Infection or cancer changes the picture: when infection is suspected or cancer is known, an MRI done before and after contrast dye is rated usually appropriate.
The 2019 version it replaced had been more permissive, rating plain X-rays appropriate as the first imaging test for neck pain without red flags. Even then it warned that wear-and-tear (spondylotic) changes are so commonly found that they can mislead in both directions, suggesting a problem that isn’t there or hiding one that is. It also noted that nearly half of people have symptoms that continue or come back.
A scan can find alarming-sounding things in people who feel fine. The BMJ review reports that in randomly selected volunteers aged 40 to 80, MRI showed compression of the spinal cord in 59%, rising from about a third of people in their 40s to two-thirds in their 70s. Only two people reported related symptoms. A 2017 international guideline from AOSpine, a community of spine surgeons, suggests not offering preventive surgery to people with compression on a scan but no symptoms, and instead counseling them about warning signs and following them over time.
Painkillers tell a similar story. The Centers for Disease Control and Prevention (CDC), in its 2022 opioid prescribing guideline, counts neck pain among the everyday acute problems for which non-opioid options are at least as effective as opioids, while noting that head-to-head evidence for neck pain specifically is limited. The OPAL trial in Sydney, which enrolled people with acute neck pain as well as low back pain, found a short opioid course no better than placebo at six weeks; the back pain article walks through its numbers.
After a crash or a fall: rules built for the emergency room
Injury changes the question. Here the worry is a fracture or ligament tear that could threaten the spinal cord, and two decision rules help clinicians decide who needs imaging.
The first came from the National Emergency X-Radiography Use Study (NEXUS). Its authors noted that fear of missing a hidden injury had led clinicians to X-ray nearly everyone with blunt trauma. At 21 US centers, they tested five criteria on 34,069 patients. A person counted as low risk only with no tenderness along the midline of the back of the neck, no focal neurological deficit, normal alertness, no intoxication and no painful injury elsewhere distracting from the neck. The rule caught all but 8 of 818 injuries, and the New England Journal of Medicine reported in 2000 that it could have spared 12.6% of patients an X-ray.
The second, the Canadian C-spine rule, was pitted against NEXUS in nine Canadian emergency departments with 8,283 alert, stable patients. Published in the same journal in 2003, the comparison found the Canadian rule more sensitive, 99.4% against 90.7%. It would have missed 1 important injury where NEXUS missed 16, and would have meant fewer X-rays. One catch: in about one patient in ten, physicians skipped the neck-movement check the Canadian rule requires.
These are tools for trained clinicians after an injury, not checklists to run on yourself at home. Midline tenderness and a focal neurological deficit are findings from an examination. Neck pain after a serious crash, fall or blow, combined with numbness, weakness or trouble moving an arm or leg, is an emergency, and calling 911 is the fastest route to care.
Whiplash: the crash details matter less than you’d think
Whiplash is the label for neck injuries caused by a sudden jolt, often in a car crash. A widely cited summary of its course comes from the Bone and Joint Decade 2000-2010 Task Force on Neck Pain, which reviewed studies published from 1980 to 2006 and accepted 47 on whiplash. Its 2008 synthesis in Spine concluded: “The evidence suggests that approximately 50% of those with WAD will report neck pain symptoms 1 year after their injuries.” WAD stands for whiplash-associated disorders. Reporting symptoms is not the same as being disabled, and the paper did not say half are disabled.
What predicted slower recovery is the useful part. Greater pain, more symptoms and greater disability early on all pointed to a longer course. Details of the collision itself, such as its direction or the type of headrest, mostly did not. Psychological responses after the injury did: a passive way of coping, low mood and fear of movement were each linked to slower or less complete recovery. The task force also found preliminary evidence that the compensation system people were in was linked to how they recovered.
The way whiplash is graded is under pressure too. A widely used scale from the Quebec Task Force runs from grade I to grade IV. A 2022 review in the journal Pain, led by Oxford researchers and covering 54 studies, found questionnaire answers suggesting nerve-type pain in about a third of patients. People placed in grade II, a grade traditionally defined by the absence of nerve involvement, still showed reduced sensation and sensitive nerves on testing. The authors suggested the classification may need rethinking.
For early whiplash with a good outlook, the physical therapy guideline’s decision tree lists education to stay active, gentle pain-free neck movement at home, and keeping collar use to a minimum. What trials show for physical therapy and exercise in neck pain is the subject of the library’s physical therapy article.
Pain down the arm: cervical radiculopathy
When a nerve root in the neck is compressed or irritated, the result can be pain, pins and needles, numbness or weakness running into the shoulder, arm or hand. The American Academy of Orthopaedic Surgeons (AAOS) calls this cervical radiculopathy, or a pinched nerve, and its patient page says most people with it improve over time without needing treatment. For some, the pain eases within days or weeks; for others it takes longer, and a return later is common. Some people find relief by resting a hand on top of the head.
The academy also lists conditions that can mimic it, and heart disease is among them. That matters because arm, shoulder, neck and jaw pain are also on the CDC’s list of heart attack symptoms, alongside chest discomfort, breathlessness, and feeling weak, faint or light-headed. The CDC’s instruction for those is to call 911 immediately.
Two collar instructions sit side by side in the guidance, and they point opposite ways. For acute whiplash, the physical therapy decision tree says to minimize collar use. For acute pain radiating down the arm, it lists possible short-term collar use, along with mobilizing and stabilizing exercises and low-level laser. The CDC guideline likewise mentions a collar or exercise as possibly effective for acute neck pain with radiculopathy. The difference reflects the condition, not a contradiction.
On imaging, the radiology group’s current criteria rate both an X-ray and an MRI as may be appropriate when arm nerve pain is new or worsening without red flags, and MRI as usually appropriate once neck pain with arm symptoms has become chronic. On surgery, the orthopaedic academy says it may be recommended if nonsurgical treatment has not relieved symptoms after a period of time.
The neck problem that barely hurts: degenerative cervical myelopathy
Degenerative cervical myelopathy (DCM) is spinal cord dysfunction caused by compression in the neck from changes that grow more common with age: herniated discs, thickened ligaments and bone spurs. The 2018 BMJ review describes early symptoms that are subtle and easy to blame on something else. There is neck stiffness, sometimes without pain, and limb pain, numbness or tingling. Hands lose their dexterity, so buttons, keys, phones and handwriting get harder. Balance worsens, falls become frequent, and bladder control can change.
The orthopaedic academy adds a distinction worth knowing. Unlike vertigo, there is no spinning sensation; the head and eyes feel steady while the body seems unable to carry out what you intend.
The defining feature is change over time. Most patients describe months of slowly worsening function, and the review notes that people may put it down to getting older. Most are first diagnosed in their 50s, and the condition is uncommon before 40. The academy’s page says the condition will progress, whatever its pace, though the BMJ review notes that the pace varies and some people stay mild for long periods.
Why it gets missed
Early signs are subtle and overlap with other conditions. The BMJ review cites a study of 42 people in Israel who had surgery for DCM. On average, 2.2 years passed between their first symptoms and diagnosis, with a range from under two months to almost nine years, and they needed about five consultations to get there. Forty-three percent had first been diagnosed with, and sometimes treated for, carpal tunnel syndrome. From their own clinical experience, the authors add that a carpal tunnel diagnosis, especially one made in both hands, is often incorrect, with DCM usually accounting for the symptoms.
Nobody knows how common it is. Surgically treated DCM is estimated at 1.6 per 100,000 people, and the reviewers say the true figure is likely much higher. In one small study of 66 people with hip fractures, 18% had previously unrecognized findings suggestive of the condition.
Why timing matters
Surgery to take pressure off the cord can halt progression, but the cord has limited capacity to heal, and damage is often permanent. In a series of 746 patients, treatment within six months of symptoms offered the best chance of recovery, well short of current average times to diagnosis.
The AOSpine guideline recommends surgery for moderate and severe DCM. For mild disease, it suggests either surgery or a supervised trial of structured rehabilitation, with surgery if function deteriorates. Which path suits a given patient is for a spine specialist to judge after an examination and an MRI.
One treatment is off the table. The BMJ reviewers wrote that “neck manipulation is strictly contraindicated as it might cause further damage.” The orthopaedic academy says manipulation should never be used for spinal cord compression. The broader safety debate over neck manipulation, including the argument over artery tears, gets a full airing in our spinal manipulation article.
This corrects a common belief: if it does not hurt much, it cannot be serious. Here, worsening clumsiness matters more than pain. Telling whether numb, clumsy hands come from the wrists or the neck takes a full neurological examination, which is exactly what the BMJ review urges clinicians to do.
Which neck symptoms need what kind of care
This grouping is this article’s own, built from the sources above.
Call 911:
– Neck pain after a serious crash, fall or blow, with numbness, weakness or trouble moving an arm or leg.
– Neck pain or headache with any sudden stroke sign the CDC lists: trouble walking, dizziness or loss of balance; trouble seeing; numbness or weakness of the face, arm or leg, especially on one side; confusion or trouble speaking; or a severe headache with no known cause. The American Heart Association notes that a tear in a neck artery, among the most common causes of stroke in young and middle-aged adults, can announce itself with headache on one side or pain in the back of the neck.
– Arm, shoulder, neck or jaw pain that comes with chest discomfort, breathlessness or faintness.
Get a prompt appointment, within days rather than weeks:
– Hands that are getting clumsier: buttons, keys, writing, phone use, or dropping things.
– Numbness in both hands, unsteady walking, new falls or new bladder changes.
– Arm pain with weakness or numbness that is new or getting worse.
– Neck pain with fever, or in a person who has had cancer.
Raise at a routine visit: an ache or stiffness without any of the above that is not settling. Whether it needs any test is the clinician’s judgment. Stiffness spreading across both shoulders and the neck in an older adult has other possible causes, which the library’s joint stiffness article covers.
What the guideline lists for everyday neck pain
A US clinical practice guideline specific to neck pain comes from the Orthopaedic Section of the American Physical Therapy Association, published in the Journal of Orthopaedic & Sports Physical Therapy in July 2017 as Neck Pain: Revision 2017. No later revision was found when this article was researched.
It sorts neck pain into four groups: pain with limited movement, pain with movement coordination problems (the whiplash group), pain with headache arising from the neck, and pain radiating down the arm. Before any of that, it screens for conditions that need another clinician, using an international framework for examining the neck alongside the Canadian C-spine rule and NEXUS.
For new pain with limited movement, the guideline’s decision tree lists manipulation of the upper back, mobilization or manipulation of the neck, range-of-motion, stretching and isometric strengthening exercises, and advice to stay active with exercises at home. The summary document prints no evidence grades, and this article does not assign any.
The CDC’s opioid guideline, among nondrug options for longer-lasting pain, names mind-body practices such as yoga, tai chi or qigong, along with massage and acupuncture, for neck pain. The evidence on massage and acupuncture is reviewed treatment by treatment later in this series, and the blame usually placed on screens and slouching is examined in our articles on desk setup and posture.
The most useful thing to know
For ordinary neck pain, the useful question is not what a scan would show. It is whether anything is changing that should not be. A painful, stiff neck that slowly loosens is the common story; for it, the opioid trial that included neck pain found no benefit, and the radiology group’s current criteria give even a plain X-ray only a middling rating.
The pattern worth acting on can hurt very little. Hands that keep getting clumsier, walking that grows less steady, numbness that spreads to both hands: if those are on your list, the best thing to bring to the appointment is that list itself, with a direct question about whether the neck could be the cause.
Keep exploring: pain and tissue damage.
Sources
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- Global Spine Journal (AOSpine). “Fehlings MG, Tetreault LA, Riew KD, et al. "A Clinical Practice Guideline for the Management of Patients With Degenerative Cervical Myelopathy: Recommendations for Patients With Mild, Moderate, and Severe Disease and Nonmyelopathic Patients With Evidence of Cord Compression." Global Spine Journal, 2017. PubMed. DOI: 10.1177/2192568217701914.” pubmed.ncbi.nlm.nih.gov
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