Most heart attacks announce themselves quietly — not with a dramatic collapse, but with a heaviness on the stairs, a jaw ache that fades, a breathlessness blamed on age. This guide helps you tell the dangerous from the harmless, and shares a few things the standard pamphlets leave out.
Before anything else — the part that cannot wait. Do not drive yourself. Do not wait to see if it settles. Paramedics can begin treatment in your living room, long before you would reach hospital by car. During a heart attack, muscle dies by the minute — and the muscle lost does not grow back.
Tightness, heaviness, or crushing pain lasting more than ten minutes — with or without other symptoms.
Discomfort radiating to one or both arms, the jaw, neck, back, or shoulders.
Sweating, nausea, breathlessness, or lightheadedness alongside any chest discomfort.
Severe pain that tears through to the back — this may signal a different but equally urgent condition.
Before anything else — the part that cannot wait. Do not drive yourself. Do not wait to see if it settles. Paramedics can begin treatment in your living room, long before you would reach hospital by car. During a heart attack, muscle dies by the minute — and the muscle lost does not grow back.
Tightness, heaviness, or crushing pain lasting more than ten minutes — with or without other symptoms.
Discomfort radiating to one or both arms, the jaw, neck, back, or shoulders.
Sweating, nausea, breathlessness, or lightheadedness alongside any chest discomfort.
Severe pain that tears through to the back — this may signal a different but equally urgent condition.
Here is the first thing most people have backwards. They assume sharp, stabbing pain is the dangerous kind — and that a dull ache can be safely ignored. In the cardiology world, it is usually the other way around.
Sharp, stabbing pain that can be pinpointed with one finger, that worsens when breathing in or twisting — this typically comes from the chest wall, muscles, or rib joints. The heart does not produce this kind of precise, positional pain.
Cardiac discomfort is vague almost by design. A pressure, a tightness, a heaviness sitting behind the breastbone that refuses to be located exactly. People reach for the same phrases: a weight on the chest, a band tightening, an elephant sitting on them. Describing it with a flat hand or fist over the centre — not a pointed fingertip — is the language of the heart.
If you take one idea from this article, make it this one. The most powerful clue to whether chest discomfort is cardiac is its relationship with exertion. Pain from a narrowed coronary artery follows a clear logic: the narrowing limits blood flow. Trouble appears when the heart works harder, and it settles when you stop and let demand fall.
Walking uphill, hurrying for a bus, carrying shopping upstairs — the heart is asked to work harder.
A heaviness, tightness, or ache appears — reliably, during the same level of effort.
Stopping the activity eases the discomfort within a few minutes. This pattern is called stable angina.
Become a good historian of your own symptoms. When did it come on? What were you doing? How long did it last? What made it stop? Those four answers tell an experienced cardiologist more than most machines do.
Most chest pain genuinely is not cardiac — and understanding the common causes is useful, though none of them are safe to self-diagnose for the very first time. If in doubt, get checked.
A strained chest muscle or inflamed rib joint produces pain that is sharp, tender to the touch, tied to a particular movement, and worse with a deep breath. If pressing firmly on the sore spot recreates the pain exactly, the odds swing away from the heart — though treat this as a guide, not a guarantee.
Stomach acid rising into the oesophagus can produce a burning central discomfort that mimics angina so closely the two are sometimes impossible to separate without testing. A link to meals, lying down at night, or a sour taste points towards reflux — but "indigestion" has sent people home when the cause was cardiac, and the reverse happens just as often.
Anxiety is real and physical. It can generate genuine chest tightness, a pounding heart, breathlessness, and tingling in the hands — usually building fast and easing over twenty to thirty minutes. It is a legitimate cause of chest pain. It is also a diagnosis made after the heart has been cleared, never as the opening assumption.
The classic crushing chest pain is, in a strange way, the easy presentation — because it frightens people into hospital quickly. The quiet presentations are the ones that cause the most harm, and they gather in particular groups.
Women more often experience breathlessness, unusual fatigue, nausea, or jaw and upper back discomfort rather than the textbook crushing pain. These symptoms deserve the same urgency.
Diabetes can blunt the nerves that carry warning pain, so a starved heart may whisper rather than shout. New exertional symptoms — however mild — warrant investigation.
Breathlessness out of proportion to effort, unfamiliar fatigue, or dull discomfort in the stomach or upper body may be the only signal. Age does not make symptoms less important — it often makes them harder to read.
Most patients assume the artery most likely to cause a heart attack is the one that looks most narrowed on a scan. The truth is stranger — and it matters more than people realise.
Many heart attacks are triggered not by the tightest blockage, but by a modest one that was never limiting blood flow. A plaque narrowing an artery by just forty per cent can carry a thin, unstable cap that suddenly cracks, triggers a clot, and closes the vessel within minutes.
Meanwhile, a stable ninety per cent narrowing might behave for years as predictable exertional angina and never be the thing that ends a life. This is why "my scan was clear last year" is thinner comfort than it sounds — and why a heart attack can strike someone who felt perfectly well the day before.
Assessing your cardiovascular risk — with tools such as the Australian Absolute Cardiovascular Disease Risk Calculator or a coronary artery calcium score — and treating cholesterol and blood pressure properly works by calming the entire arterial environment, not just the one narrowing that happens to be visible on imaging.
Modern imaging can study arteries in remarkable detail, and modern tools can open blockages once considered too complex for anything but open surgery. The best outcome, though, is still the heart attack that never happens.
The reassuring reality is that most chest pain is harmless. The harder reality is that it is not possible to reliably separate the harmless from the dangerous from your kitchen table — and the delay while trying is exactly what causes the damage.
"Denial is not a character flaw. It is one of the most predictable features of a heart attack — and it is dangerous precisely because it feels so reasonable in the moment."
Countless patients have said afterwards that they did not want to make a fuss, that they were certain it was indigestion, that they decided to sleep on it. The patients who do best are almost always the ones who "overreacted." Nobody has ever been grateful for the heart muscle they lost by waiting until morning.
Severe chest pain, pain at rest, or pain accompanied by sweating or breathlessness. Every time, without exception.
Milder discomfort that is new, keeps returning, or comes on with exertion. Not an emergency — but not something to gamble on settling by itself.
Knowing the pathway removes much of the fear that keeps people at home. Assessment begins with your story and an examination — the history of your symptoms carries genuine diagnostic weight. An ECG follows, and if the pain is recent or active, a blood test called troponin looks for evidence of heart muscle injury.
Your description of symptoms — when, what you were doing, how long, what stopped it — guides diagnosis as much as any test. An ECG records the electrical activity of the heart and can reveal acute problems.
A quick, low-dose CT scan measuring hardened plaque in the coronary arteries — a useful indicator of long-term risk even when symptoms are mild.
Shows the arteries in fine detail and has become one of the best ways to rule coronary disease in or out. Medicare rebates apply in Australia when requested by a specialist or when clinical criteria are met.
A stress test watches how the heart performs under load. If a significant blockage is confirmed, an invasive angiogram — guided through the wrist — can identify and often treat it in the same procedure with a stent. What once required open-heart surgery can now mean a single day in hospital.
The heart is remarkably honest about signalling when something is wrong. The skill lies in listening — without either panicking or dismissing it. Arrange a non-urgent assessment with a GP as the first step, or directly with a cardiologist if a referral is already in place, if any of the following apply.
Discomfort that comes on reliably with physical effort and settles with rest — the hallmark pattern of stable angina.
Any chest pain that keeps returning, even briefly, even mildly — this is your body repeating a message worth hearing.
New chest symptoms alongside diabetes, high blood pressure, high cholesterol, a strong family history of heart disease, or a past or current smoking habit.
Avoiding the stairs or the hills you once climbed without a thought — that change in behaviour is itself a symptom worth investigating.
© 2026 Dr Primero Ng. All rights reserved.
Consultant Interventional Cardiologist, Perth, Western Australia.
Information on this website is general in nature and does not replace individual medical advice.
Chest Pain: When to Worry, and When It Isn't Your Heart