Understanding chest discomfort without overlooking urgent causes
Deciphering Causes of Chest Pain: Respiratory, Cardiac, Gastroenterological or Musculoskeletal?
Chest pain can arise from the heart, lungs, oesophagus, chest wall, nerves or several other structures. The character of the pain may provide clues, but symptoms overlap and potentially serious causes cannot be excluded safely from an online description alone.
Most chest pain is not a heart attack
Reflux, chest-wall pain, muscular strain, coughing and respiratory inflammation are common explanations. Medical assessment is still important when pain is new, recurrent or unexplained.
Pain quality is a clue, not a diagnosis
Sharp pain is not automatically harmless, and burning discomfort is not automatically reflux. Heart and lung emergencies can present atypically.
The first principle: exclude dangerous causes
Chest pain should first be assessed according to urgency. The priority is not to decide whether the pain “sounds respiratory” or “sounds like indigestion,” but to identify whether a heart attack, pulmonary embolism, aortic emergency, collapsed lung or another time-critical condition is possible.
The location and character of pain can help guide an assessment, but serious conditions do not always produce textbook symptoms. Women, older adults, people with diabetes and immunocompromised patients may present with less typical symptoms.
Respiratory
Pain from the pleura, pulmonary circulation, airways, lung infection or a collapsed lung.
Cardiac and vascular
Pain related to coronary blood flow, inflammation around the heart or major blood vessels.
Gastroenterological
Pain originating in the oesophagus, stomach, gallbladder or other upper-abdominal structures.
Musculoskeletal
Pain from muscles, ribs, cartilage, joints, the thoracic spine or repetitive coughing.
Treat new or severe chest pain according to its potential seriousness rather than attempting to classify it from one symptom characteristic.
What can the pattern of chest pain suggest?
| Pain pattern | Possible explanation | Important caution |
|---|---|---|
| Pressure, heaviness or squeezing | Angina or acute coronary syndrome | Burning or indigestion-like pain can also be cardiac |
| Pain spreading to an arm, jaw, neck or back | Heart attack or angina | Not every heart attack radiates, and radiation can occur with other conditions |
| Sharp pain worse on breathing | Pleurisy, pneumonia, pulmonary embolism, pneumothorax or pericarditis | Pleuritic pain can represent a medical emergency |
| Burning after meals or when lying down | Gastro-oesophageal reflux | Cardiac pain may be mistaken for heartburn |
| Pain reproduced by pressing or moving | Muscle strain, costochondritis or rib pain | Reproducibility lowers but does not eliminate the possibility of another cause |
| Sudden pain with breathlessness | Pulmonary embolism, pneumothorax, cardiac or aortic disease | Requires urgent medical assessment |
| Pain after coughing or lifting | Muscular strain, rib injury or costochondral pain | Persistent pain, breathlessness or haemoptysis requires review |
| Pain with a blistering one-sided rash | Shingles | Pain may start before the rash appears |
Symptoms alone cannot reliably identify the cause
Clinical history helps determine the likely diagnosis, but examination, observations, an ECG, blood tests or imaging may be needed to distinguish conditions with overlapping presentations.
Respiratory causes of chest pain
Lung tissue itself has limited pain sensation. Respiratory pain commonly arises from the pleura, chest wall, pulmonary blood vessels or structures affected by infection, coughing or inflammation.
Pleurisy and pneumonia
Typical clues
Sharp pain made worse by deep breathing or coughing, sometimes accompanied by fever, cough, sputum or breathlessness.
Possible assessment
Examination, oxygen saturation, chest X-ray, blood tests and microbiological testing where indicated.
Treatment
Treatment targets the cause and may include pain relief, antibiotics for bacterial infection and hospital care when pneumonia is severe.
Pulmonary embolism
What happens?
A blood clot, commonly originating in a deep vein of the leg or pelvis, travels to the pulmonary circulation.
Possible symptoms
Sudden breathlessness, sharp pleuritic pain, rapid heart rate, haemoptysis, faintness or unexplained low oxygen.
Assessment and treatment
Risk assessment, D-dimer and CT pulmonary angiography or another scan may be used. Treatment usually involves anticoagulation.
Pneumothorax
What is it?
Air enters the space between the lung and chest wall, causing part or all of the lung to collapse.
Possible symptoms
Sudden one-sided chest pain and breathlessness, sometimes in a person with underlying lung disease.
Treatment
Management ranges from observation to aspiration or chest drainage depending on size, symptoms and clinical stability.
Chest infection
Infection may cause pleuritic discomfort, coughing-related muscular pain or pressure from airway inflammation.
Severe coughing
Repeated coughing can strain the intercostal muscles and costochondral joints, producing localised pain.
Asthma
Asthma more commonly produces tightness than focal pain. Unexplained chest pain should not automatically be attributed to asthma.
Pleural effusion
Fluid around the lung may cause breathlessness, heaviness or pleuritic discomfort depending on its cause and size.
Learn more about chest-infection assessment and treatment and specialist investigation of breathlessness .
Cardiac and vascular causes of chest pain
Angina
Mechanism
The heart muscle temporarily receives insufficient oxygen, commonly because coronary arteries are narrowed.
Typical pattern
Pressure, heaviness or tightness triggered by exertion, cold weather or emotional stress and relieved by rest or prescribed GTN.
Assessment
Clinical review may include ECG, blood tests, coronary CT, functional testing or invasive angiography.
Heart attack
Mechanism
Blood flow through a coronary artery becomes critically reduced or blocked, causing injury to heart muscle.
Possible symptoms
Persistent pressure, squeezing, indigestion-like pain, sweating, nausea, breathlessness or pain radiating to the arms, jaw, neck or back.
Emergency treatment
ECG and cardiac troponin testing are central. Emergency treatment may include antiplatelet therapy and urgent coronary intervention.
Pericarditis
Mechanism
The sac surrounding the heart becomes inflamed, sometimes after a viral infection or as part of another inflammatory disorder.
Typical pattern
Sharp pain that may worsen on deep breathing or lying flat and improve when sitting forward.
Assessment
ECG, blood tests and echocardiography may be needed to confirm inflammation and assess for fluid around the heart.
Aortic emergencies
Sudden severe chest or upper-back pain, particularly pain described as tearing or associated with collapse, neurological symptoms or a pulse difference, requires immediate emergency assessment. Aortic dissection is uncommon but life-threatening.
Gastroenterological causes of chest pain
The oesophagus lies behind the heart and can produce pain that closely resembles cardiac discomfort. Heart disease should not be dismissed solely because symptoms occur after food or feel like indigestion.
Gastro-oesophageal reflux disease
Mechanism
Stomach contents travel into the oesophagus, causing irritation and sometimes oesophageal hypersensitivity.
Possible clues
Burning behind the breastbone, acidic taste, belching or symptoms after meals, bending or lying down.
Assessment and treatment
Treatment may include lifestyle measures and acid suppression. Endoscopy or pH-impedance testing is reserved for selected cases.
Oesophageal spasm and motility disorders
Mechanism
Abnormal oesophageal contractions or impaired relaxation may cause chest pressure or pain.
Possible clues
Pain associated with swallowing, food sticking or difficulty with solids and liquids.
Assessment
Endoscopy, contrast studies and oesophageal manometry may be considered by a gastroenterologist.
Oesophageal inflammation
Reflux, medicines, infection or allergic inflammation can cause pain during swallowing or retrosternal discomfort.
Hiatus hernia
A hiatus hernia may contribute to reflux, although its presence does not prove that every episode of chest pain is oesophageal.
Gallbladder disease
Upper-abdominal pain may radiate towards the chest, shoulder or back and may follow fatty meals.
Peptic disease
Gastritis or ulcer disease can produce upper-abdominal or lower chest discomfort but requires appropriate clinical assessment.
Read more about the relationship between reflux, aspiration and respiratory disease .
Musculoskeletal and chest-wall causes
Chest-wall pain is common, particularly after coughing, lifting, exercise or an awkward movement. It is often localised and influenced by movement or pressure.
Costochondritis
What is it?
Pain and tenderness affecting one or more joints between the ribs and breastbone.
Possible clues
Local tenderness, pain with upper-body movement, coughing or deep inspiration.
Treatment
Activity modification, appropriate pain relief, heat or cold and physiotherapy may help after more serious causes have been excluded.
Muscle strain
Common triggers
Heavy lifting, unfamiliar exercise, repetitive movement, severe coughing or direct injury.
Possible clues
Pain worsened by a particular movement or muscle contraction and improved by rest.
Assessment
History and examination are often sufficient, although imaging may be needed after trauma or when another cause is suspected.
Rib injury
Bruising or fracture may follow trauma or occasionally severe repetitive coughing, especially when bone strength is reduced.
Thoracic spine pain
Pain from spinal joints, discs or muscles may wrap around the chest or worsen with posture and movement.
Tietze syndrome
This less common condition resembles costochondritis but includes visible or palpable swelling at an affected costochondral joint.
Shingles
Burning or hypersensitive pain in a band on one side of the chest may precede the characteristic blistering rash.
Tenderness does not provide absolute reassurance
Pain reproduced by pressing on the chest wall supports a musculoskeletal explanation, but it should not override emergency symptoms, significant cardiac risk or unexplained breathlessness.
Anxiety, panic and other causes
Anxiety and panic
Anxiety can cause tightness, rapid breathing, palpitations, tingling and dizziness. A first or atypical episode still requires consideration of physical causes.
Breathing pattern dysfunction
Over-breathing, upper-chest breathing and respiratory muscle tension can produce chest discomfort and air hunger.
Medication effects
Some medicines can worsen reflux, cause oesophageal injury or contribute to palpitations and chest awareness.
Inflammatory conditions
Autoimmune disease can affect the pleura, pericardium, blood vessels, joints or oesophagus.
Where chest discomfort occurs with air hunger, sighing, tingling or unexplained breathlessness, read the guide to breathing pattern dysfunction .
How is chest pain investigated?
Testing is guided by urgency, age, cardiovascular risk, associated symptoms, examination findings and the suspected organ system. Not every patient requires every test.
| Investigation | What it may assess | Important limitation |
|---|---|---|
| ECG | Heart rhythm, acute coronary changes, pericarditis and other electrical abnormalities | A normal ECG does not exclude every cardiac cause |
| Cardiac troponin | Evidence of heart-muscle injury | Timing and serial measurement may be important |
| Chest X-ray | Pneumonia, pneumothorax, pleural fluid and some alternative causes | It does not exclude pulmonary embolism or all lung disease |
| D-dimer | Helps exclude pulmonary embolism in selected lower-risk patients | It is non-specific and must be used with clinical probability |
| CT pulmonary angiogram | Pulmonary embolism and other thoracic abnormalities | Involves radiation and intravenous contrast |
| CT coronary angiography | Coronary artery anatomy and plaque | Suitability depends on the clinical setting and heart rate |
| Echocardiogram | Heart function, valves and fluid around the heart | Does not directly visualise coronary artery narrowing |
| Lung-function tests | Airflow obstruction, restriction and gas-transfer abnormalities | Usually not used to exclude an acute emergency |
| Endoscopy or reflux testing | Oesophageal inflammation, reflux and selected motility problems | Gastrointestinal investigation normally follows appropriate cardiac assessment |
A respiratory consultation may include chest imaging and lung-function testing where the history suggests a pulmonary or airway cause.
How is chest pain treated?
Chest pain is a symptom rather than one diagnosis. Treatment should address the underlying cause rather than suppress pain without understanding why it occurred.
Cardiac treatment
Depending on the diagnosis, treatment may include antiplatelet therapy, anticoagulation, nitrates, lipid-lowering treatment, angioplasty or surgery.
Respiratory treatment
Treatment may include antibiotics, anticoagulation, pleural drainage, inhaled therapy, oxygen or other disease-specific care.
Reflux treatment
Meal timing, weight management where relevant, trigger reduction and prescribed acid-suppressing treatment may be considered.
Musculoskeletal treatment
Appropriate analgesia, temporary activity modification, movement rehabilitation and physiotherapy may help.
Anti-inflammatory medicines are not suitable for everyone
Ibuprofen and related medicines may be unsuitable in people with kidney disease, stomach ulcers, anticoagulant treatment, certain heart conditions or sensitivity to anti-inflammatory medicines. Ask a clinician or pharmacist when uncertain.
Can chest pain be prevented?
Not every cause is preventable, but several measures reduce the risk of cardiovascular, respiratory, reflux-related and musculoskeletal problems.
Do not smoke
Smoking increases the risks of coronary disease, blood clots, COPD, lung cancer and respiratory infection.
Manage cardiovascular risk
Blood pressure, diabetes, cholesterol, physical activity and body weight should be reviewed appropriately.
Manage reflux triggers
Avoiding large late meals and identifying individual dietary triggers may reduce reflux-related symptoms.
Build activity gradually
Progressive training, appropriate lifting technique and adequate recovery reduce the risk of muscular strain.
People who smoke can read the guide to smoking cessation and respiratory health .
When should you seek medical help?
Call 999 immediately for:
- sudden chest pain or pressure that does not go away;
- squeezing, crushing, heavy or severe chest discomfort;
- pain spreading to either arm, the jaw, neck, stomach or back;
- chest pain with sweating, nausea, vomiting or light-headedness;
- chest pain with severe breathlessness, gasping or blue or grey lips;
- sudden pleuritic pain with breathlessness, collapse or haemoptysis;
- sudden severe chest or back pain with weakness, collapse or neurological symptoms;
- a new loss of consciousness or inability to respond normally.
Do not drive yourself to hospital when a heart attack, pulmonary embolism or another emergency is possible.
Arrange prompt non-emergency assessment when:
- chest pain comes and goes;
- pain has resolved but remains unexplained;
- pain repeatedly occurs during activity;
- pain is associated with cough, fever or breathlessness;
- you have cardiovascular risk factors;
- you have persistent pain after a respiratory infection;
- reflux treatment has not controlled recurring symptoms;
- chest-wall pain persists despite rest and simple measures.
Conclusion
Chest pain has many possible causes. Respiratory explanations include pleurisy, pneumonia, pulmonary embolism and pneumothorax. Cardiac causes include angina, heart attack and pericarditis.
Gastro-oesophageal reflux and oesophageal motility disorders can mimic cardiac pain, while costochondritis, muscular strain and rib problems are common musculoskeletal causes.
The nature of the pain provides useful clues but cannot safely exclude serious disease. Sudden, persistent or severe pain, pain spreading to the arms or jaw, or pain accompanied by sweating, nausea, collapse or significant breathlessness requires emergency assessment.
Persistent, recurrent or unexplained non-emergency pain should receive a structured clinical assessment. Where a respiratory or pleuritic origin is suspected, patients can arrange a specialist chest-pain consultation .
Frequently asked questions
Can stress or anxiety cause chest pain?
Yes. Anxiety can cause muscle tension, reflux, over-breathing, palpitations and genuine chest discomfort. New or unusual chest pain should not be assumed to be anxiety before important physical causes are considered.
Does sharp chest pain mean it is not cardiac?
No. Sharp pain is often pleural or musculoskeletal, but pericarditis and some cardiac presentations can also be sharp. The full clinical context matters.
Does pain when I press my chest mean costochondritis?
Local tenderness supports a chest-wall source but does not prove the diagnosis or fully exclude a coexisting heart or lung condition.
How does pleuritic chest pain feel?
It is commonly sharp and worsens with deep inspiration or coughing. Causes range from viral pleurisy to pulmonary embolism, so associated symptoms and risk factors are important.
Can acid reflux feel like a heart attack?
Yes. Reflux and cardiac pain can overlap considerably. Persistent pressure, radiation, sweating, nausea or breathlessness should be treated as potentially cardiac.
Can coughing cause chest pain?
Repeated coughing can strain muscles, irritate rib joints and aggravate pleural inflammation. Fever, haemoptysis or breathlessness warrants clinical review.
Can asthma cause chest pain?
Asthma often causes chest tightness. Focal, severe or persistent pain is less typical and should not automatically be attributed to asthma.
What tests are used for pulmonary embolism?
Testing depends on clinical probability and may include D-dimer, CT pulmonary angiography or a ventilation-perfusion scan. Not every patient needs all tests.
Can a normal ECG exclude a heart attack?
No. Some acute coronary syndromes initially have a non-diagnostic ECG. Clinical assessment and cardiac troponin testing may also be required.
When should recurring chest pain be assessed?
Recurring, exertional, worsening or unexplained chest pain should be medically assessed even when each episode resolves.
References and further information
- NHS. Chest pain. View NHS chest-pain guidance
- NHS. Heart attack. View NHS heart-attack information
- National Institute for Health and Care Excellence. Acute coronary syndromes. NICE guideline NG185, last reviewed March 2026. View the NICE guideline
- London Chest Specialist. Chest-pain diagnosis and treatment. Read about specialist chest-pain assessment
- London Chest Specialist. Breathlessness diagnosis and treatment. Read about unexplained breathlessness
- London Chest Specialist. Chest-infection diagnosis and treatment. Read about chest infections
- London Chest Specialist. Reflux, aspiration and lung disease. Read about reflux-related respiratory symptoms
- London Chest Specialist. Lung-function tests. Read about respiratory diagnostic testing
