Health condition
Reflux vs heart pain
Heartburn and cardiac chest pain can feel remarkably similar; knowing the differences helps, but new, severe or exertional chest pain should always be treated as the heart until proven otherwise.
Why trust this guide
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Editorial team
Written by our editorial team from the UK sources listed on each page.
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Sourced from guidance
Checked against current NHS and UK specialist society guidance at the time of review.
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Current for 2026
Reviewed on 2026-09-27 with the next review scheduled for 2027-09-27.
Key facts
The essentials at a glance.
The symptoms to recognise, when to seek help, which specialist to see, and what treatment usually involves.
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Call 999 for crushing central chest pain, pain spreading to arm, neck or jaw, breathlessness or sweating
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Reflux features: burning behind the breastbone after meals or lying down, acid taste, relief from antacids
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Cardiac features: pressure or tightness brought on by exertion and eased by rest
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Specialist: a cardiologist to assess the heart, then a gastroenterologist for confirmed reflux
Understanding the condition
What it is and what happens next.
What causes it, how it is diagnosed, and the treatment routes available in the UK.
What it is and how it feels
The oesophagus and heart share nerve pathways, so acid irritation and cardiac ischaemia can produce indistinguishable central chest discomfort. Features that favour reflux include burning quality, meal and posture triggers, acid regurgitation and antacid relief; features demanding cardiac assessment include exertional onset, radiation to the arm or jaw, breathlessness, sweating and risk factors such as diabetes or smoking.
Diagnosis and treatment routes
The safe sequence is heart first: new chest pain warrants urgent assessment, ECG and, where appropriate, further cardiac testing. Once the heart is cleared, persistent symptoms are evaluated as reflux, with a treatment trial and endoscopy or pH studies where needed, and both conditions can coexist, so neither diagnosis excludes the other. In many parts of the UK, routine NHS referrals for this kind of problem currently take 20-45+ weeks, whereas an initial appointment with a private consultant is typically available within around two weeks.
Seeing a specialist
Who to see, and how quickly you can be seen.
The specialist for this condition is usually a consultant gastroenterologist or cardiologist. Your GP can refer you on the NHS, or you can arrange a private consultation directly.
A quiet reminder
This guide is for information, not medical advice.
Your GP knows your history and can tell you which parts apply to you. If in doubt, see them - and seek urgent care for any of the emergency symptoms described above.
Frequently asked
Common questions about Reflux vs heart pain.
Quick, plain-English answers to what people ask us most.
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How can I tell reflux from heart pain?
Heartburn and cardiac chest pain can feel remarkably similar, both causing burning or pressure in the chest, but new, severe or exertional chest pain should always be treated as the heart until proven otherwise, regardless of how convincing the reflux explanation seems.
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What are the clues that chest pain is reflux rather than cardiac?
Reflux pain often relates to eating, worsens when lying flat, may improve with antacids, and is frequently accompanied by a sour taste or burning sensation rising towards the throat.
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What are the warning signs that chest pain might be cardiac?
Warning signs include pain brought on by exertion and relieved by rest, pain spreading to the arm, jaw or back, associated breathlessness, sweating, nausea, or a sense of impending doom - these need emergency assessment.
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Is it dangerous to assume chest pain is just reflux?
Yes - assuming reflux without proper assessment risks missing a heart attack or angina, particularly in anyone with risk factors like smoking, diabetes, high blood pressure or family history, so uncertain chest pain always warrants urgent evaluation.
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How is the cause of chest pain investigated?
Investigation for concerning chest pain includes an ECG and blood tests to check for heart damage, and if these are reassuring, reflux can be assessed and treated, sometimes with a trial of acid-suppressing medication.
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How is reflux-related chest pain treated?
Once cardiac causes are excluded, reflux-related chest pain is treated with acid-suppressing medication and lifestyle changes such as weight management, smaller meals, and avoiding lying down soon after eating.
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Reflux pain vs heart pain - what's the difference?
Reflux pain tends to relate to meals and posture and often responds to antacids, while cardiac pain classically relates to exertion, may radiate to the arm or jaw, and comes with associated symptoms like breathlessness or sweating - though overlap is common enough that testing, not guessing, is needed.
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When should I seek emergency care for chest pain?
Call 999 immediately for any new, severe chest pain, especially with exertion, breathlessness, sweating or pain spreading to the arm or jaw - this needs to be assessed as a possible heart attack without delay.