Should I use this page, or skip it?
If you have chest pain right now that is tight, squeezing, spreading, or comes with sweating, sickness or breathlessness, skip this page and call 999. Do not drive yourself. If the pain has already settled and you are trying to work out GP versus 111 versus “wait and see”, stay and use the comparison below.
Most chest pain is not a heart attack. Some is. You cannot reliably tell the difference from a description on a screen, which is why the first rule is to rule out the emergency, then think about reflux, muscle strain or anxiety.
Which chest pain is an emergency?
Call 999 if you get sudden chest pain or discomfort that does not go away. The NHS says it can feel like squeezing, pressure, burning or indigestion. Also call if pain spreads to an arm, neck, jaw, stomach or back, or if chest pain comes with sweating, sickness, light-headedness or breathlessness.
Other 999 clues from NHS heart-attack guidance include severe difficulty breathing, skin or lips looking pale, blue or grey (on brown or black skin this may be clearer on the palms), or someone who has passed out and is not responding. Women, and people with diabetes, sometimes have less “classic” pain and more nausea, unusual tiredness or breathlessness. Treat that seriously.
Do not wait to see if it “eases after a cup of tea”. Do not ask a relative to drive you to A&E unless 999 has told you there is no alternative. Ambulance crews can start treatment on the way.
What should I do while waiting for an ambulance?
Sit and rest in a comfortable position, knees bent, back supported if you can — on the floor or a chair. If you think this is a heart attack and you have aspirin and are not allergic, NHS advice is to take it while you wait. If you have angina and carry GTN spray, use it as you have been taught.
Keep checking the person is awake and breathing. If they stop responding and stop breathing normally, start CPR and use a defibrillator if one is nearby. The 999 call handler will talk you through this.
If you are the one in pain, unlock the door if you can and keep the phone with you. Chewing aspirin is a 999-directed step, not a substitute for calling.
What else commonly causes chest pain?
Once you are not in the middle of an emergency, reflux, muscle strain and anxiety are more common than a heart attack. Heartburn often follows a meal. A strained chest wall hurts when you press or twist. Panic can cause tightness with a racing heart. None of these should be assumed during sudden severe pain.
Heartburn may come with bitter fluid in the throat or a bloated, full feeling. Muscle or rib strain often follows unaccustomed exercise or an injury and is worse when you breathe in. Anxiety, depression or a panic attack can add sweating and dizziness to the tightness.
A chest infection, pneumonia or pleurisy tends to hurt more on breathing in, often with a cough, coloured phlegm and a high temperature. Shingles can start as a tingling patch of skin, then a blistering rash in a stripe. None of these should be self-diagnosed during sudden severe pain.
Heart-related causes that are not always an immediate collapse include pericarditis (often sharp pain worse lying down or on a deep breath) and angina (usually triggered by walking, cold or stress, and easing with rest). A clot in the lung (pulmonary embolism) can cause chest pain with sudden breathlessness — that is also an emergency pattern, not a “see how it is in the morning” pattern.
| What you notice | Who to contact | Why |
|---|---|---|
| Sudden chest tightness, pressure, burning or indigestion-type pain that does not go away; pain into an arm, neck, jaw or back; pain with sweating, sickness or breathlessness | 999 | Possible heart attack — needs immediate hospital treatment |
| Known angina that does not settle after rest and your usual GTN as instructed; pain at rest; attacks getting worse | 999 | Unstable symptoms can be a heart attack |
| Chest pain that comes and goes, or went away quickly but you are still worried; sudden extra breathlessness; palpitations with chest pain | NHS 111 or urgent GP | Needs assessment the same day, not a routine slot in a fortnight |
| Tender spot after exercise, typical heartburn after a large meal, or panic symptoms you recognise — and no emergency features | GP or pharmacist if it keeps happening | Still get checked if it is new, severe, or you are unsure |
What if the pain comes and goes?
See a GP if chest pain comes and goes, or if it went away quickly but you remain worried. Call NHS 111 if you cannot get a prompt appointment. Pain on walking or in the cold that eases with rest can be angina. That pattern still needs assessment — it is not a reason to wait and see.
The NHS says angina attacks usually last less than 10 minutes and should stop after rest or your angina medicine. Timing is a clue, not a stopwatch to delay 999 when pain is still there and you feel unwell.
If you already have angina, follow your written plan. The NHS says to rest, use GTN, and take another dose after 5 minutes if the first did not help — and to call 999 if you still have symptoms 5 minutes after the second dose. Also call 999 if diagnosed angina suddenly happens at rest or feels worse than your usual pattern.
You are more likely to have a heart cause if you smoke, live with obesity, have high blood pressure, diabetes or high cholesterol, or a close family member had a heart attack or angina under 60. Those facts change how urgently a GP investigates. They do not give anyone a free pass to ignore sudden severe pain.
Heartburn versus heart — can I tell at home?
Not safely. Reflux pain is often related to meals and lying down, and may come with a sour taste. Heart-attack pain can feel identical to indigestion. If the discomfort is sudden, does not settle, or arrives with sweating, nausea or breathlessness, treat it as a heart problem until professionals say otherwise.
Antacids that briefly take the edge off do not prove it was reflux. People have delayed 999 because a mint “helped a bit”. If you need this article to argue yourself out of calling, call.
After a clear emergency assessment, persistent heartburn is worth a GP review. Our heartburn and acid reflux page covers that calmer conversation — it is the wrong page while you are still in pain.
What happens if it is taken seriously?
In an ambulance or emergency department you may have an ECG and blood tests. Further tests can include an echocardiogram or an angiogram if a heart attack is likely. That process exists because waiting for pain to “declare itself” costs heart muscle.
If it is not a heart attack, you should still leave with a working explanation or a follow-up plan. Recurring unexplained pain is not something to get used to. Anxiety after a scare is common; if chest tightness keeps arriving with panic, that is treatable too — but only after the dangerous causes have been considered.
If low mood or fear after a heart scare is overwhelming, your GP can help, and Samaritans are available on 116 123.
When is this page NOT the right thing to read?
Do not read this page instead of calling 999 if you have emergency chest-pain features, if someone has collapsed, or if you cannot get your breath. It is also the wrong page if you need a full heart-attack recovery guide, a known-angina action plan in writing from your cardiology team, or help for coughing up blood.
If your main problem is heartburn without alarm features, or panic attacks you already recognise, use those condition pages after you are sure you do not need emergency care. When you are uncertain, NHS 111 can triage; when you are frightened and the pain is new and severe, 999 is the correct number.
Common questions about chest pain
- How do I know if chest pain is my heart?
- You often cannot tell from the pain alone — which is why sudden, unexplained chest pain is treated as an emergency. Heart-related pain may feel tight, heavy, squeezing, burning or like indigestion, and may spread to an arm, jaw, neck, stomach or back. Sweating, sickness or breathlessness raise the stakes. If in doubt, call 999.
- What are common non-serious causes of chest pain?
- Heartburn and reflux after eating, muscle or rib strain that hurts when you press or move, and anxiety or panic with a racing heart are all common. Chest infections and shingles can also cause chest wall pain. These are diagnoses to reach after serious causes are considered — not assumptions to make during new, severe pain.
- Should I take aspirin during a suspected heart attack?
- Call 999 first. NHS advice is to take aspirin if you have some and you are not allergic, while you wait. Follow what the call handler tells you. Do not delay the ambulance to look for tablets, and do not give aspirin to someone who has been told to avoid it.
- What if my chest pain comes and goes?
- Pain brought on by walking or stress that eases with rest can be angina and needs prompt assessment even though it passes. The NHS says to see a GP if chest pain comes and goes, or goes away quickly but you are still worried. Call 111 if you cannot get seen quickly.
- Can heartburn feel like a heart attack?
- Yes. The NHS lists burning or indigestion-type discomfort among heart-attack symptoms as well as among reflux symptoms. That overlap is exactly why you should not self-diagnose a “bad bit of indigestion” when the pain is sudden, severe, or comes with sweating or breathlessness.
- I have angina — when do I call 999?
- If you have been given a plan, follow it: rest, use your GTN as instructed, and repeat once if you have been told to. Call 999 if symptoms are still there after that, if pain happens at rest, or if attacks are worse, longer or more frequent than usual. When unsure, 999 is the safer call.
- What will happen if I call 999 for chest pain that is not my heart?
- You may still be assessed in hospital with an ECG and blood tests. That is not a wasted journey. Missing a heart attack is far more harmful than being told the pain was muscular or reflux once serious causes are excluded.
- Who is more likely to have a heart cause?
- Risk is higher if you smoke, live with obesity, have high blood pressure, diabetes or high cholesterol, or if a close relative had a heart attack or angina under 60. Older age also raises risk. People without those factors can still have heart problems — risk changes the odds, not the 999 rule.