Referred shoulder pain can sometimes signal a problem that has little to do with the shoulder joint itself. Discomfort may originate in the neck, chest, diaphragm, or upper abdomen, making the cause difficult to identify from pain location alone. This is particularly important when symptoms appear without a clear injury or are accompanied by changes in breathing, digestion, or general wellbeing.
The side affected can offer useful diagnostic clues, although it cannot establish a diagnosis. Referred pain in the right shoulder may occur with gallbladder conditions or irritation near the diaphragm, while left shoulder pain can sometimes accompany heart related problems. Neither pattern is exclusive to one condition, so accompanying symptoms and medical history matter.
Distinguishing referred pain from a local shoulder disorder helps guide the next steps. Physiotherapy may be appropriate when symptoms arise from certain neck or musculoskeletal conditions, but pain linked to an internal organ may require medical treatment instead. Recognising these differences can prevent the underlying cause from being overlooked.
What Is Referred Shoulder Pain?
Referred shoulder pain occurs when the brain perceives pain in the shoulder even though the problem originates elsewhere. This happens because different parts of the body can share nerve pathways that carry pain signals to the brain. As a result, the brain may interpret signals from the neck, chest, or abdomen as discomfort around the shoulder.
Clinicians assess several features to determine whether pain originates in the shoulder or is being referred from another area. One consideration is whether shoulder movement changes the symptoms. Pain that remains relatively unchanged when the arm is raised or rotated may prompt further investigation beyond the shoulder joint, although this finding alone cannot establish the cause.
The pattern of discomfort also matters. A rotator cuff problem, for example, may cause pain during overhead reaching, lifting, or other specific arm movements. By contrast, a neck-related condition may produce pain that travels towards the shoulder, shoulder blade, or arm, sometimes alongside neck stiffness, tingling, or numbness.
These patterns are useful clinical clues rather than definitive tests. A healthcare professional may assess shoulder and neck movement, muscle strength, sensation, and other symptoms before deciding whether further medical investigation is needed. This helps distinguish a local musculoskeletal problem from pain that may require assessment of another part of the body.
What Research Says About Referred Shoulder Pain
Research highlights why shoulder pain should be assessed carefully when its source is unclear. A systematic review presented in 2025 examined referred shoulder pain in people with abdominal conditions. Across nine studies involving 2,631 patients, the researchers reported the following findings:
- 26% pooled prevalence: Referred shoulder pain was reported in 417 patients across the included studies, with estimates ranging from 5% to 54%.
- Different patterns by underlying condition: Right shoulder pain was reported in some cases involving gallstones, while left shoulder pain occurred in certain cases involving splenic injury or abscess.
- No single pattern fits every patient: The side affected varied across conditions, reinforcing the importance of assessing other symptoms and the suspected underlying cause.
These figures apply to the selected studies of patients with abdominal conditions, not to everyone experiencing shoulder pain. They also do not mean that abdominal disease is the cause of most shoulder pain. The findings simply show why unexplained shoulder discomfort may require assessment beyond the shoulder joint itself.
How Does Referred Pain Develop?
Referred pain is linked to the way the nervous system processes sensory information. Nerves carry signals from the body’s tissues to the spinal cord and brain. Signals from internal organs and areas of the skin or muscles can converge on some of the same nerve pathways. As a result, the brain may interpret signals originating in one structure as pain in another location.
This mechanism helps explain why irritation beneath the diaphragm can sometimes be felt around the shoulder. The phrenic nerve carries sensory information from the diaphragm and has connections with spinal cord levels that also receive sensation from parts of the shoulder region. The brain may therefore perceive irritation in the diaphragm as shoulder discomfort, even when the shoulder joint itself is unaffected.
The pattern varies according to the underlying cause. Neck related problems may produce pain that travels towards the shoulder blade or arm, sometimes with tingling or numbness. Pain associated with an internal organ may occur alongside nausea, abdominal discomfort, sweating, or changes in breathing. These differences help clinicians decide which investigations may be needed.
Referred pain does not always follow a predictable pattern, and its intensity does not necessarily indicate how serious the underlying condition is. Persistent or unexplained shoulder pain should be assessed in context, particularly when it begins suddenly or occurs with other symptoms.
Common Causes of Referred Shoulder Pain
Several conditions can cause pain to be felt around the shoulder even when the shoulder joint is not the primary source. The possible causes range from relatively common neck problems to medical conditions that require urgent attention.
Neck Problems and Nerve Irritation
The neck and shoulder share closely connected muscles, joints, and nerve pathways. Irritation in the cervical spine can cause pain that spreads into the shoulder, shoulder blade, or arm.
A cervical nerve may become irritated by changes around the spinal joints or discs. Depending on the affected nerve, symptoms may include tingling, numbness, burning discomfort, or weakness extending down the arm.
Neck-related pain may become more noticeable when turning or tilting your head. Sitting for long periods or maintaining a particular posture can also aggravate symptoms in some people.
Although neck problems are a common source of shoulder region discomfort, persistent numbness, progressive weakness, or changes in coordination need medical assessment. These symptoms should not automatically be attributed to muscle tension.
Gallbladder Problems
The gallbladder sits beneath the liver in the upper right part of the abdomen. Gallstones or gallbladder inflammation can cause pain that spreads towards the back or right shoulder blade.
This pattern may occur alongside pain beneath the right ribs or in the upper middle abdomen. Some people also experience nausea or vomiting, and symptoms may become more noticeable after eating, particularly after a heavy meal.
Referred pain right shoulder symptoms accompanied by persistent abdominal pain, fever, vomiting, or yellowing of the skin or eyes require prompt medical attention. Severe or prolonged symptoms should not be managed with shoulder exercises alone.
Heart-Related Conditions
Heart conditions can cause discomfort that spreads beyond the chest. Pain may be felt in the shoulder, arm, neck, jaw, back, or upper abdomen. Although left shoulder pain is commonly associated with heart attacks, symptoms do not always follow this pattern.
Referred pain in the left shoulder can be concerning when it occurs with chest pressure, breathlessness, sweating, nausea, lightheadedness, or unusual fatigue. Some people, including women, may experience symptoms that do not resemble the dramatic chest pain often shown in films.
A heart attack can occur during activity or at rest. Do not assume that shoulder pain is muscular simply because you have exercised recently or because the discomfort is not severe.
If shoulder pain occurs with chest discomfort, difficulty breathing, faintness, cold sweating, or other possible heart attack symptoms, call your local emergency number immediately. Do not wait to see whether stretching or rest makes the pain disappear.
Lung and Diaphragm Conditions
The lungs and the lining surrounding them can cause pain that is felt around the shoulder or upper back. Irritation near the diaphragm may also refer discomfort towards the shoulder because of shared nerve pathways.
Depending on the cause, symptoms may include pain when taking a deep breath, coughing, fever, breathlessness, or chest discomfort. Some lung conditions develop gradually, while others cause sudden symptoms.
Sudden shoulder pain accompanied by difficulty breathing, sharp chest pain, coughing up blood, or collapse requires emergency medical attention. These symptoms need assessment for serious chest conditions rather than treatment as an ordinary shoulder problem.
Upper Abdominal Conditions
Problems involving abdominal organs can sometimes cause pain around the shoulder blade. Gallbladder disease is one example, while inflammation affecting other upper abdominal organs may cause pain in the back or nearby regions.
The location varies according to the condition. Discomfort may occur with nausea, vomiting, abdominal tenderness, fever, or changes in digestion. The shoulder may feel painful even when moving the arm does not reproduce the symptoms.
The combination of shoulder pain and abdominal symptoms is particularly important when the pain is sudden, severe, persistent, or associated with feeling generally unwell. A medical assessment can help identify the source and determine whether tests are needed.
Referred Pain: Right Shoulder and Left Shoulder
The side of the shoulder that hurts may help guide an assessment, but it cannot identify the cause by itself. Several conditions can affect either shoulder, and serious problems do not always follow the expected pattern.
What Can Cause Referred Pain in the Right Shoulder?
Referred pain in the right shoulder can occur with gallbladder conditions, irritation near the diaphragm, neck problems, or some chest conditions. Gallbladder pain may spread towards the right shoulder blade, particularly when discomfort also occurs beneath the right ribs.
The timing and associated symptoms are important. Pain after meals accompanied by upper abdominal discomfort may suggest a different cause from pain that changes when you turn your neck.
Right shoulder pain can also result from a local muscle or tendon problem. If it began after lifting, falling, or performing a demanding activity, a shoulder injury may be more likely, although an assessment may still be needed to distinguish between possibilities.
What Can Cause Referred Pain in the Left Shoulder?
Referred pain left shoulder symptoms can occur with neck conditions, chest problems, and certain internal medical conditions. Heart-related pain is an important possibility when shoulder discomfort occurs with chest pressure, breathlessness, nausea, sweating, or lightheadedness.
Not all left shoulder pain is heart-related, and not every heart attack causes left shoulder pain. The absence of chest discomfort does not completely rule out a heart problem.
Sudden unexplained pain, especially when accompanied by other concerning symptoms, needs urgent assessment. It is safer to seek emergency help for possible heart attack symptoms than to assume the pain is caused by a muscle strain.
Referred Shoulder Pain Symptoms to Look For
The symptoms depend on where the pain originates. Some people experience only an ache around the shoulder, while others notice symptoms in several parts of the body.
Pain that remains relatively unchanged when the arm moves may suggest a source outside the shoulder, although this is not conclusive. Discomfort that changes with neck movement may point towards a neck-related cause. Pain that occurs alongside abdominal symptoms, nausea, or breathing difficulties raises different concerns.
You may notice a dull ache around the shoulder blade, discomfort that travels into the neck or arm, or pain that appears without a clear injury. Tingling, numbness, weakness, fever, or digestive symptoms may provide additional information about the underlying condition.
Pay attention to when the pain begins, how long it lasts, and what happens at the same time. For example, pain after meals, discomfort during physical exertion, or pain that worsens with deep breathing can help a clinician determine which areas need examination.
If the discomfort is centred around the shoulder blade, our guide to Shoulder Blade Pain explains other possible causes and the symptoms that may accompany them.
How Is Referred Shoulder Pain Diagnosed?
Diagnosis begins with understanding the symptoms and identifying whether the shoulder is likely to be the source. A clinician may ask when the pain started, whether it followed an injury, and whether it changes with movement, breathing, eating, or physical activity.
The examination depends on the suspected cause. Shoulder and neck movement may be assessed when a musculoskeletal problem is likely. If symptoms suggest a heart, lung, or abdominal condition, medical evaluation takes priority over physiotherapy assessment.
Medical History and Physical Examination
A healthcare professional may examine the shoulder, neck, and surrounding areas. They may check movement, strength, tenderness, sensation, and reflexes when these findings are relevant.
Questions about chest symptoms, abdominal pain, recent illness, previous injuries, and current medication can also help guide the assessment. The clinician may ask whether the pain is constant or intermittent and whether anything makes it better or worse.
When Are Further Tests Needed?
Tests depend on the suspected cause. Blood tests, an electrocardiogram, chest imaging, abdominal ultrasound, or other investigations may be considered when the symptoms suggest an internal medical problem.
Not everyone with shoulder pain needs imaging or laboratory tests. The aim is to choose investigations that answer a specific clinical question rather than ordering every possible test.
Referred Shoulder Pain Treatment
Treatment depends on what is causing the pain. A neck-related problem may respond to a suitable rehabilitation programme, while gallbladder disease, heart conditions, or lung problems need medical treatment directed at the underlying cause.
Trying to treat only the shoulder can delay the right care if the source lies elsewhere. For unexplained shoulder pain, the first step is to establish whether the symptoms are safe to manage through routine musculoskeletal care.
Treatment for Neck-Related Pain
When assessment identifies a neck or musculoskeletal problem, treatment may include appropriate movement exercises, gradual strengthening, changes to aggravating activities, and advice on managing daily tasks.
The programme should reflect the symptoms and examination findings. Exercises that are suitable for one person may be inappropriate for someone with nerve weakness or another underlying condition.
If symptoms include persistent numbness, worsening weakness, or severe neck pain, seek medical assessment before beginning a new exercise programme.
Treatment for Internal Medical Causes
Pain caused by gallbladder disease, heart conditions, or lung problems requires treatment for the underlying condition. Depending on the diagnosis, this may involve medication, monitoring, hospital care, or a procedure.
Physiotherapy does not replace medical investigation when symptoms suggest an internal cause. Once a serious condition has been assessed and the person is medically stable, rehabilitation may be appropriate if movement problems or secondary muscle discomfort remain.
When Physiotherapy May Help
Physiotherapy may be useful when assessment identifies a musculoskeletal source, such as neck-related pain or a shoulder movement problem. Treatment can focus on improving movement, restoring strength, and helping you return to normal activities.
If your symptoms have been assessed and a musculoskeletal cause has been identified, explore Shoulder Pain Treatment to learn about shoulder rehabilitation options.
When Should You Seek Medical Attention?
Unexplained shoulder pain should be taken seriously when it appears suddenly, persists without an obvious cause, or occurs with symptoms affecting other parts of the body.
Call your local emergency number if shoulder pain occurs with chest pressure, difficulty breathing, cold sweating, faintness, or pain spreading to the arm, jaw, neck, or back. Sudden severe chest or shoulder pain needs urgent assessment even if you have no known heart condition.
Seek urgent medical care for sudden breathlessness, coughing up blood, severe abdominal pain, persistent vomiting, fever with significant illness, or yellowing of the skin or eyes. A shoulder that becomes deformed after an injury or cannot be moved also needs prompt assessment.
Arrange a routine medical appointment if pain keeps returning, affects sleep, limits normal activities, or has no clear explanation. Early assessment can help identify the cause and reduce the risk of delaying appropriate treatment.
Shoulder instability is another reason to seek assessment, particularly if the joint feels as though it slips out of place or has dislocated before. Read more about Recurrent Shoulder Dislocations: Causes and Treatments to understand how repeated instability differs from pain referred from another part of the body.
Conclusion
Referred shoulder pain occurs when the source of discomfort lies outside the shoulder itself. Neck problems, gallbladder disease, heart conditions, and some lung or abdominal conditions can all produce symptoms around the shoulder or shoulder blade.
The side of the pain and the way it behaves may provide clues, but neither can confirm the cause. Pay attention to accompanying symptoms and seek urgent help when shoulder pain occurs with chest discomfort, breathing difficulties, faintness, or other serious warning signs.
Once the underlying cause has been identified, treatment can be directed towards the condition responsible for the pain. For musculoskeletal problems that are suitable for rehabilitation, CC Physiotherapy provides information about physiotherapy services that may support recovery.
Frequently Asked Questions
What is the most common cause of referred shoulder pain?
Neck-related problems are one possible source of pain felt around the shoulder. Internal conditions, including gallbladder and heart problems, can also cause referred pain. The likely cause depends on the symptoms, medical history, and examination findings.
What causes referred pain in the right shoulder?
Gallbladder problems can cause pain that spreads towards the right shoulder or shoulder blade. Neck and chest conditions may also cause discomfort in this area. Right shoulder pain accompanied by abdominal pain, fever, or vomiting needs prompt medical assessment.
Is referred pain in the left shoulder a sign of a heart attack?
It can be, especially when it occurs with chest pressure, breathlessness, sweating, nausea, or lightheadedness. Heart attack symptoms do not always follow the same pattern. Seek emergency help if you suspect a heart attack rather than waiting for the pain to settle.
How can I tell if my shoulder pain is referred?
Pain without an obvious shoulder injury, particularly when accompanied by neck, chest, or abdominal symptoms, may suggest a source outside the shoulder. Movement patterns can offer clues but cannot confirm the cause. A clinical assessment is the safest way to investigate unexplained pain.
Can physiotherapy treat referred shoulder pain?
Physiotherapy may help when the pain comes from a musculoskeletal problem, such as a neck-related condition. It does not treat internal medical causes such as heart or gallbladder disease. Identifying the source of pain is important before starting rehabilitation.
When should I worry about shoulder pain?
Seek emergency care if shoulder pain occurs with chest pressure, breathing difficulties, sweating, faintness, or sudden severe pain. Severe abdominal symptoms or sudden loss of shoulder movement after an injury also require prompt assessment. Persistent unexplained pain should be reviewed by a healthcare professional.
