Pleuritic chest pain

01OverviewDefinition, clinical context and the essential points that orientate the chapter.

Pleuritic chest pain describes pain coupled to respiratory movement. The first clinical task is not to prove pleurisy but to identify time-critical disease. Pulmonary embolism can cause peripheral infarction and pleural irritation; pneumothorax separates pleural surfaces; pneumonia and viral infection inflame the pleura; pericarditis often varies with respiration and posture. Rib injury, costochondral pain and cervical or thoracic radicular pain are common alternatives. Acute coronary and aortic disease remain safety-critical because pain descriptors overlap and individual accounts are imperfect.

History should establish abrupt versus gradual onset, site, radiation, positional change, exertion, reproducibility, breathlessness, cough, fever, haemoptysis, leg symptoms, collapse and rash. Review thrombosis risk, recent trauma or procedure, underlying lung disease, cancer, infection, autoimmune disease and cardiovascular risk. Examination begins with observations and perfusion, then compares bilateral air entry and percussion, seeks focal infection, rub, effusion, calf asymmetry, pericardial features, pulse or pressure asymmetry and focal chest-wall tenderness.

Testing follows the leading emergency question. ECG and troponin address myocardial injury; radiography addresses pleural air, fluid and consolidation; the NICE two-level Wells and D-dimer pathway governs PE imaging; ultrasound can rapidly detect pleural fluid or absent lung sliding but depends on operator and context. If initial tests are negative, reassess whether pain is genuinely explained and whether shingles, upper-abdominal disease, sickle crisis or inflammatory disease requires a different route.

Key points

Pleuritic pain is sharp and worsened by inspiration or cough, reflecting movement of pain-sensitive pleura, pericardium, chest wall or nearby structures; lung parenchyma itself is largely insensitive.
Pulmonary embolism, pneumothorax and pneumonia are key thoracic causes, but acute coronary syndrome, pericarditis and acute aortic syndrome can present atypically and must remain in the first assessment.
Sudden pain with dyspnoea, venous-thromboembolism risk or haemoptysis requires a Wells-led PE pathway; neither reproducible tenderness nor a normal saturation safely excludes embolism.
Sudden unilateral pain with reduced breath sounds suggests pneumothorax; physiological compromise with obstructive shock requires immediate decompression before imaging.
Fever, cough, focal crackles or bronchial breathing suggests pneumonia, while a pleural rub is specific for inflamed pleural surfaces but often transient.
Obtain ECG in acute chest pain even when symptoms sound pleuritic, because ischaemia and pericarditis change immediate management.
Chest radiography identifies pneumothorax, consolidation and effusion but can be normal in embolism and early pleural inflammation.
Analgesia supports ventilation and cough, but symptom improvement must not be used as proof of a benign musculoskeletal cause.

02AetiologyUnderlying causes, associations and risk factors, with why each one matters.

Pleural inflammation

Pneumonia, viral pleurisy, tuberculosis and autoimmune disease irritate somatically innervated parietal pleura and cause pain with respiratory movement.

Pulmonary vascular disease

Pulmonary embolic infarction inflames peripheral pleura, often producing abrupt pain with breathlessness or haemoptysis, whose relevance depends on the complete exposure and clinical history.

Pleural air or blood

Spontaneous or traumatic pneumothorax and haemothorax mechanically irritate pleura and may also cause respiratory or circulatory compromise.

Adjacent thoracic disease

Pericarditis, aortic disease, rib injury and chest-wall inflammation can produce respiration-linked pain without primary pleural pathology.

03PathophysiologyThe causal sequence from the underlying abnormality to symptoms and harm.

1
Parietal pleural stimulation
Inflammation, stretch or friction activates intercostal and phrenic sensory fibres; visceral pleura and lung parenchyma themselves are relatively insensitive.
2
Respiratory movement
Deep inspiration, coughing and trunk motion increase rubbing or stretch between inflamed pleural surfaces, producing sharp pain.
3
Pain-limited ventilation
The patient breathes shallowly to avoid pain, reducing cough and dependent ventilation despite the underlying disease still driving respiratory demand.
4
Referred pain
Central diaphragmatic pleural irritation travels through the phrenic nerve and may be perceived at the shoulder rather than the chest.

04Clinical features and red flagsSymptoms, examination findings, patterns of presentation and time-critical warnings.

Pulmonary embolismRed flag

Sudden pleuritic pain, unexplained breathlessness, tachycardia, haemoptysis, syncope or hypoxaemia with thrombosis risk raises probability. A normal chest radiograph, normal ECG or reproducible tenderness cannot independently exclude it.

PneumothoraxRed flag

Abrupt unilateral pain with dyspnoea, reduced air entry and hyperresonance suggests pleural air, especially with smoking, underlying lung disease, trauma or a recent procedure. Hypotension, severe distress or rapidly worsening physiology suggests tension.

Pneumonia or pleural infection

Fever, cough, purulent sputum, focal crackles or bronchial breathing with a new infiltrate supports pneumonia. Persistent fever, dullness or a pleural collection raises parapneumonic effusion or empyema requiring ultrasound and source-control assessment.

PericarditisRed flag

Central or left-sided pain that improves sitting forward, a pericardial rub and widespread ST-segment or PR changes supports pericarditis. Effusion, raised JVP, hypotension or pulsus paradoxus raises tamponade risk.

Acute coronary or aortic diseaseRed flag

Age, vascular risk, exertional component, autonomic symptoms, tearing radiation, neurological deficit, pulse asymmetry or new aortic regurgitation should override a superficially pleuritic description and trigger the relevant emergency pathway.

Chest-wall pain

Local tenderness reproduced by movement or palpation without physiological abnormality supports musculoskeletal pain, but coexisting tenderness does not exclude embolism or ischaemia. Trauma requires fracture and underlying pneumothorax assessment.

05InvestigationsWhat to request, why it matters and how to interpret it.

Investigation order

Read from the initial assessment onwards. Tests may run in parallel in urgent care; first-line, preferred, confirmatory, definitive and gold-standard labels appear only when the chapter explicitly states them.

01
ABCDE observations and pulse oximetryFirst step
Why
Identify respiratory failure, shock or another need for immediate monitored care.
Interpretation and limitations
Tachypnoea may be an early severity sign even with normal saturation. Hypotension, altered consciousness or increasing oxygen need changes a diagnostic work-up into a resuscitation pathway.
02
Twelve-lead ECG and serial troponin
Why
Assess acute coronary disease, pericarditis, arrhythmia and indirect right-heart strain.
Interpretation and limitations
Regional ischaemic changes or a dynamic troponin pattern require acute coronary assessment. Diffuse changes may support pericarditis; an ECG cannot exclude PE, and troponin elevation can reflect right-heart strain or other myocardial injury.
03
Chest radiograph
Why
Detect pneumothorax, consolidation, effusion, fracture or mediastinal abnormality.
Interpretation and limitations
Do not delay decompression of clinically unstable tension pneumothorax. A normal film does not exclude PE, pericarditis or early infection; widened mediastinum is neither sensitive nor specific for aortic disease.
04
Two-level PE Wells score and D-dimer
Why
Set pre-test probability and determine whether imaging is needed.
Interpretation and limitations
Follow NICE timing and age-adjusted D-dimer recommendations. A positive D-dimer is non-specific; a negative result excludes PE only within the appropriate low-probability pathway.
05
CT pulmonary angiography or ventilation-perfusion imaging
Why
Confirm or exclude pulmonary embolism when the probability pathway indicates imaging.
Interpretation and limitations
CTPA also reveals important alternatives but uses iodinated contrast and radiation. Consider V/Q imaging when contrast allergy, severe renal impairment or radiation distribution makes it preferable, using local radiology expertise.
06
Thoracic and focused cardiac ultrasound
Why
Identify pleural air or fluid, peripheral consolidation, tamponade or severe right-heart strain at the bedside.
Interpretation and limitations
Findings are operator-dependent. Absent lung sliding is not unique to pneumothorax; B-lines are non-specific; a normal bedside scan cannot exclude PE or acute coronary disease in a stable patient.

06Differential diagnosisRealistic alternatives and the features that help distinguish them.

Pulmonary embolism

Abrupt pain, dyspnoea, syncope, haemoptysis or venous thromboembolism risk requires probability-led assessment even with a normal radiograph.

Pneumothorax

Sudden unilateral pain, reduced breath sounds and pleural air on imaging establish the diagnosis; instability raises tension physiology.

Pneumonia

Fever, cough, focal crackles and consolidation support infection, though early imaging can be normal, and corroborating objective findings prevent an incorrect diagnostic label.

Acute coronary syndrome

Pressure-like or exertional pain, autonomic symptoms, electrocardiographic change or troponin dynamics indicate myocardial ischaemia despite an apparently pleuritic description.

Pericarditis or aortic disease

Positional pain and diffuse electrocardiographic change suggest pericarditis, while abrupt severe pain with pulse or neurological asymmetry suggests aortic catastrophe.

07ManagementImmediate care, first-line treatment, alternatives and escalation.

01First assessmentExclude immediate thoracic threatsFirst stepAny new pleuritic chest pain before a benign cause is secure.

1Use ABCDE, measure oxygenation and haemodynamics, obtain ECG and examine for asymmetric air entry, infection, venous thrombosis, pericardial disease and aortic signs.
2Treat clinically unstable tension pneumothorax immediately; activate the relevant emergency pathway for shock, acute coronary disease, tamponade, sepsis or suspected acute aortic syndrome.
3DefinitiveObtain chest radiography when stable enough and use focused ultrasound if it can answer an urgent pleural or cardiac question without delaying definitive care.
4Only after dangerous causes are reasonably excluded should reproducible tenderness or a viral syndrome be accepted as the working explanation.

02PE pathwayProbability-led embolism assessmentPleuritic pain with unexplained breathlessness, haemoptysis, syncope or venous-thromboembolism risk.

1Apply the NICE two-level PE Wells score after history and examination; do not substitute unstructured intuition or D-dimer alone for pre-test probability.
2If PE is unlikely, obtain D-dimer and use the age-adjusted threshold where recommended; if PE is likely, arrange CTPA immediately when possible and follow interim-anticoagulation guidance if imaging is delayed.
3Use V/Q imaging or another specialist route when CTPA is unsuitable, and perform leg ultrasound when DVT symptoms may establish venous thrombosis without thoracic contrast imaging.
4AlternativeIf imaging is negative but clinical concern remains, review image quality and alternative diagnoses rather than repeating anticoagulation or dismissing symptoms automatically.

03InfectivePneumonia and pleural complicationFever, cough, focal chest findings or radiographic infiltrate accompanying pleuritic pain.

1Assess pneumonia severity, oxygenation and sepsis physiology, obtain appropriate imaging and microbiology, and start guideline-concordant antibiotics when pneumonia is established.
2Use thoracic ultrasound when an effusion is present; significant, loculated or clinically infected fluid requires diagnostic aspiration and pleural-team assessment.
3Reassess persistent fever or pain despite treatment for empyema, abscess, pulmonary embolism or an obstructing lesion rather than extending antibiotics blindly.

04Low riskSupported non-emergency causeStable observations, negative emergency assessment and findings supporting chest-wall or uncomplicated viral pleural pain.

1Use appropriate simple analgesia, maintain comfortable deep breathing and mobility, and treat cough or the confirmed underlying illness without unnecessary antibiotics.
2Explain the working diagnosis and the limits of current testing, particularly that recurrence or new breathlessness changes the assessment.
3Provide specific return advice for syncope, haemoptysis, fever, worsening breathlessness, new rash, persistent pain or reduced exercise tolerance.

Key medicines and prescribing safety2 treatments · regimens, roles and cautions

Reduces pleural or chest-wall pain so the patient can breathe, cough and mobilise effectively.

Non-opioid analgesia

Use paracetamol or an anti-inflammatory medicine at the lowest effective formulary dose for the shortest necessary course when individual contraindications allow.

Check renal function, gastrointestinal bleeding risk, anticoagulants, asthma sensitivity, pregnancy and liver disease. Analgesic response does not establish a benign diagnosis.

Reduces thrombus propagation while definitive pulmonary-embolism testing is pending in an appropriately assessed patient.

Interim therapeutic anticoagulation for delayed PE testing

When NICE criteria are met and diagnostic imaging or D-dimer is delayed, use an appropriate therapeutic anticoagulant selected for renal function, bleeding risk and local pathway.

Obtain baseline blood count, renal and liver function and coagulation testing without delaying treatment. Exclude active major bleeding and reconsider immediately if aortic disease or another bleeding diagnosis emerges.

08ComplicationsImportant consequences, why they occur and why they matter clinically.

Missed life-threatening disease

Prematurely labelling pain as viral or musculoskeletal can delay treatment of embolism, pneumothorax, coronary disease or aortic catastrophe.

Hypoventilation and atelectasis

Severe pain limits deep breathing and cough, promoting dependent collapse and secretion retention, creating an additional need for recognition and targeted treatment.

Respiratory failure

The underlying pneumonia, embolism, pneumothorax or effusion may worsen gas exchange while pain masks the trajectory.

Pleural effusion

Persistent pleural inflammation can generate fluid that further restricts ventilation and may become infected, and potentially prolonging treatment and functional recovery.

09Monitoring and follow-upTreatment response, safety checks and longer-term review.

Trend respiratory rate, SpO2 and oxygen need, pulse, blood pressure, temperature, consciousness and pain while an acute cause remains unresolved.
In suspected PE monitor for syncope, hypotension, rising oxygen need and right-heart strain, and ensure delayed imaging is actively tracked.
In pneumonia review fever, oxygenation, haemodynamics and oral intake, with repeat pleural imaging if pain or systemic inflammation persists.
After a pneumothorax intervention monitor air leak, respiratory symptoms and follow-up imaging according to the pleural service pathway.
For presumed benign pain define a review point; persistence, recurrence or new systemic features should trigger diagnostic reassessment rather than repeated analgesia.

10Special situationsVariants, exceptions and circumstances that change the usual approach.

Tenderness does not rule out embolism

Patients splint and recruit chest-wall muscles during pleural pain, producing secondary tenderness. Reproducibility lowers neither thromboembolic probability nor the need for a structured pathway enough on its own.

Pleurisy can have normal imaging

Inflamed pleural surfaces may produce pain and a rub before fluid or parenchymal opacity becomes visible. Imaging is used to find the cause and complications, not to prove every pleuritic sensation.

Ultrasound signs need context

Absent lung sliding can follow pleurodesis, fibrosis, mainstem intubation or apnoea, while B-lines accompany oedema and several interstitial processes. Combine signs and obtain definitive imaging when stable.

Troponin identifies injury

A raised troponin in pleuritic pain may reflect acute coronary disease, pulmonary-embolism right-heart strain, myocarditis or sepsis. It is a risk and mechanism clue, not a diagnosis by itself.

Pain control protects ventilation

Untreated pain promotes shallow breathing, retained secretions and immobility. Safe analgesia is part of respiratory management even while the underlying cause is still being treated.

11Common pitfallsFrequent interpretation and management errors.

01
Calling pain musculoskeletal solely because palpation reproduces it.
02
Using a normal chest radiograph to exclude pulmonary embolism.
03
Waiting for imaging before treating a physiologically unstable tension pneumothorax.
04
Ordering D-dimer without first defining clinical probability, creating avoidable false-positive imaging cascades.
05
Treating a pleural effusion as uncomplicated pneumonia without ultrasound or source-control assessment.
06
Allowing pain relief after an anti-inflammatory medicine to substitute for diagnostic follow-up.