What usually causes itStrong evidence
'Neck and shoulder pain' usually means pain in the band of muscle from the neck to the top of the shoulder (the upper trapezius and levator scapulae), around or between the shoulder blades, or in the shoulder joint itself, alone or together. The NHS lists the neck locking in an awkward position while sleeping, long spells at a desk, a pinched nerve and injuries as the commonest causes of neck pain, and describes age-related change in the neck (cervical spondylosis) as 'a common condition that can cause neck and shoulder pain, often in people over 40'. NHS inform says neck problems can cause pain in the shoulders, arms and upper back, and headaches.
In general practice, pain referred from the neck is one of the four commonest causes of shoulder pain, alongside the rotator cuff, a frozen shoulder and the joint at the top of the shoulder (the acromioclavicular joint), a primary care review says. In office workers, new neck pain was predicted by little variety in their tasks, a keyboard close to the body, low satisfaction with the workplace and, most strongly, feeling tense.
Sources 1, 2, 3, 4, 5
A trapped nerve often hurts around the shoulder blade firstEmerging evidence
A trapped nerve in the neck (cervical radiculopathy) causes neck pain with pain, tingling or numbness down one arm, and often pain around the shoulder blade: of 81 studies that described where it hurt, 72% mentioned the shoulder blade, which can come weeks before the arm pain. Which spot hurts depends on the nerve: in 25 people, the fifth neck nerve root referred pain above the shoulder blade, the sixth from there to the back of the shoulder, the seventh between the shoulder blades and the eighth between and over them. In another clinical study, the small joints where the neck meets the upper back referred pain above the shoulder blade and over its top and middle.
In Rochester, Minnesota, 83.2 people per 100,000 a year were diagnosed with a trapped nerve in the neck, most often at 50 to 54; only 14.8% followed exertion or an injury, and 90% had no symptoms or only mild ones at follow-up. NHS inform expects it to start improving within 12 weeks, sometimes taking up to a year.
Sources 6, 7, 8, 9, 10
The neck and the shoulder often hurt togetherEmerging evidence
An international consensus of shoulder physiotherapists agreed that neck and shoulder problems often coexist and can affect each other. In a shoulder surgeon's review, about 1 in 4 people with a trapped neck nerve also had painful shoulder impingement on examination. Shoulder pain with neck pain lasts longer: of 349 new episodes of shoulder pain in Dutch general practice, 23% had recovered at a month and 59% at a year, and having neck pain as well predicted symptoms that lasted or came back.
Sources 11, 12, 13, 4
Other causes to knowStrong evidence
Pressure on the spinal cord in the neck (degenerative cervical myelopathy) causes clumsy hands, numbness in both arms and unsteady walking. It is mostly diagnosed in people in their 50s, after an average delay of 2.2 years, and 43% were first treated as carpal tunnel syndrome. Thoracic outlet syndrome usually affects one arm and hand, and the NHS lists gaining a lot of muscle, for example in bodybuilding, and repetitive arm movements among its causes. Over 50, new pain and stiffness in both shoulders, often the neck and hips too, lasting more than 45 minutes in the morning can be polymyalgia rheumatica, which the NHS says is very rare under 50.
Some causes aren't in the muscles or joints at all. Heart pain can spread to either arm, the neck, jaw, shoulder, stomach or back, the NHS angina page says, and in a registry of 1,143,513 people having a heart attack, 42.0% of women and 30.7% of men had no chest pain. An inflamed gallbladder causes pain under the right ribs that spreads towards the right shoulder; shoulder tip pain with tummy pain can mean bleeding from an ectopic pregnancy; lung cancer can cause chest or shoulder pain; and a stiff neck with a fever and a very painful headache can be meningitis.
Sources 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25
How clinicians tell the neck from the shoulder, and when a scan helpsEmerging evidence
Clinicians separate the two by where the pain goes and what brings it on. Pain above the shoulder blade or spreading past the elbow, pain that changes when you move your neck, and pins and needles, burning or numbness point to the neck; pain on the outside of the upper arm that is worse lifting, reaching or lying on it points to the shoulder. NHS inform says problems felt in the shoulder can come from the neck even without neck pain. No single test settles it: a positive Spurling's test, pressing down on the tilted head, makes a trapped nerve likely, but how often it picks one up varied widely between studies, and in one study of 82 people a cluster of four findings made it much more likely, with wide uncertainty.
X-rays and magnetic resonance imaging (MRI) scans usually aren't needed for a trapped nerve, NHS inform says, and findings are common without pain: disc bulges in 87.6% of 1,211 adults with no neck symptoms, and rotator cuff changes in up to 62% of people over 80 without symptoms. An MRI matters urgently when pressure on the spinal cord is suspected, because treatment within 6 months does best, and blood tests for inflammation support a diagnosis of polymyalgia rheumatica.
Sources 11, 4, 26, 27, 28, 10, 29, 30, 14, 18
How it usually goesStrong evidence
Most new neck problems settle within 8 weeks, with the biggest change in the first couple of weeks, NHS inform says, and the Chartered Society of Physiotherapy (CSP) says most first episodes get a lot better within 3 months. But neck pain often comes back: half to three-quarters of people with neck pain report it again 1 to 5 years later. A trapped nerve usually starts to improve within 12 weeks and can take up to a year, and shoulder pain with neck pain tends to last longer. No one can promise a timescale.
Sources 3, 31, 32, 10, 13