Educational draft · awaiting clinical reviewThe full textbook explains uncertainty but does not replace live national or local guidance, specialist advice, or current prescribing information.
Use pleuritic pain as a localisation clue rather than a diagnosis, rapidly exclude pulmonary embolism, pneumothorax, pneumonia, acute coronary disease and aortic or pericardial emergencies, then treat the established cause safely.
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.
Pneumonia, viral pleurisy, tuberculosis and autoimmune disease irritate somatically innervated parietal pleura and cause pain with respiratory movement.
Pulmonary embolic infarction inflames peripheral pleura, often producing abrupt pain with breathlessness or haemoptysis, whose relevance depends on the complete exposure and clinical history.
Spontaneous or traumatic pneumothorax and haemothorax mechanically irritate pleura and may also cause respiratory or circulatory compromise.
Pericarditis, aortic disease, rib injury and chest-wall inflammation can produce respiration-linked pain without primary pleural pathology.
Inflammation, stretch or friction activates intercostal and phrenic sensory fibres; visceral pleura and lung parenchyma themselves are relatively insensitive.
Deep inspiration, coughing and trunk motion increase rubbing or stretch between inflamed pleural surfaces, producing sharp pain.
The patient breathes shallowly to avoid pain, reducing cough and dependent ventilation despite the underlying disease still driving respiratory demand.
Central diaphragmatic pleural irritation travels through the phrenic nerve and may be perceived at the shoulder rather than the chest.
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.
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.
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.
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.
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.
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
Abrupt pain, dyspnoea, syncope, haemoptysis or venous thromboembolism risk requires probability-led assessment even with a normal radiograph.
Sudden unilateral pain, reduced breath sounds and pleural air on imaging establish the diagnosis; instability raises tension physiology.
Fever, cough, focal crackles and consolidation support infection, though early imaging can be normal, and corroborating objective findings prevent an incorrect diagnostic label.
Pressure-like or exertional pain, autonomic symptoms, electrocardiographic change or troponin dynamics indicate myocardial ischaemia despite an apparently pleuritic description.
Positional pain and diffuse electrocardiographic change suggest pericarditis, while abrupt severe pain with pulse or neurological asymmetry suggests aortic catastrophe.
Prematurely labelling pain as viral or musculoskeletal can delay treatment of embolism, pneumothorax, coronary disease or aortic catastrophe.
Severe pain limits deep breathing and cough, promoting dependent collapse and secretion retention, creating an additional need for recognition and targeted treatment.
The underlying pneumonia, embolism, pneumothorax or effusion may worsen gas exchange while pain masks the trajectory.
Persistent pleural inflammation can generate fluid that further restricts ventilation and may become infected, and potentially prolonging treatment and functional recovery.
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.
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.
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.
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.
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.
Calling pain musculoskeletal solely because palpation reproduces it.
Using a normal chest radiograph to exclude pulmonary embolism.
Waiting for imaging before treating a physiologically unstable tension pneumothorax.
Ordering D-dimer without first defining clinical probability, creating avoidable false-positive imaging cascades.
Treating a pleural effusion as uncomplicated pneumonia without ultrasound or source-control assessment.
Allowing pain relief after an anti-inflammatory medicine to substitute for diagnostic follow-up.
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A stable adult develops sudden pleuritic pain and breathlessness ten days after major surgery. The chest radiograph and oxygen saturation are normal. What is the best next diagnostic approach?
National guidance is shown before implementation-dependent detail. Typical adult dose examples remain subject to patient factors, contraindications and the live BNF or specialist protocol. Source check completed 27 Aug 2026; clinical approval remains outstanding.
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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.
Check renal function, gastrointestinal bleeding risk, anticoagulants, asthma sensitivity, pregnancy and liver disease. Analgesic response does not establish a benign diagnosis.
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.