By Dr. Rakhi Agarwal, M.S. (General Surgery), FAIS, FICS · Medical Director, Shree Kkasturi Medicare Pvt. Ltd. Published: 19 September 2026 · Medically reviewed: 19 September 2026

It is around midnight. There is a heavy, burning discomfort in the middle of the chest. Dinner was late and heavy. Someone finds an antacid. Twenty minutes later it feels a little better, so everyone goes back to sleep.

Sometimes that is exactly what it was. Sometimes it was not — and those hours of sleep are the ones that could not be recovered.

This confusion is not carelessness. There is a genuine anatomical reason for it: the heart and the food pipe send their pain signals along nerves that enter the spinal cord at the same levels. The brain receives the signal but cannot reliably tell which organ sent it. That is why a heart attack can feel exactly like severe acidity, and why even doctors do not diagnose it by feel — we diagnose it with an ECG and a blood test.

What follows is not a way to diagnose yourself. It is a way to decide whether you need to be seen tonight.

What does heart pain usually feel like?

Cardiac pain is more often a pressure than a burn — heaviness, tightness, squeezing, a band across the chest, or the sensation of a weight sitting on it. It is usually diffuse. If you can point to the exact spot with one fingertip, it is less likely to be the heart.

The features that raise concern:

1. Radiation — the discomfort spreads to the left arm, both arms, the jaw, the neck, the upper back between the shoulder blades, or down into the upper abdomen

2. Brought on by exertion — climbing stairs, walking fast, carrying weight, or intense emotion — and eased by sitting still

3. Sweating — cold, clammy sweat with no reason for it. This is one of the most important signs and it is very often ignored

4. Breathlessness, nausea or vomiting, giddiness

5. An unexplained sense of dread. Patients describe it as knowing that something is badly wrong. Take it seriously

6. It lasts more than ten to fifteen minutes and does not change when you shift position

What does acidity usually feel like?

Reflux and gastritis tend to burn rather than press, and the burning travels upward — towards the throat — often with a sour or bitter taste, or a sensation of food coming back up.

The features that point towards the stomach:

1. Clearly linked to food — large meals, spicy or oily food, eating late at night, alcohol, or a long gap without eating

2. Worse when lying flat or bending forward, better when sitting or standing up

3. Relieved by an antacid reliably and repeatedly, in the same way, every time

4. A long-standing pattern — this has happened many times over months and feels familiar

5. No sweating. No breathlessness. These two absences matter

But the antacid worked — doesn't that settle it?

No. This is the single most dangerous assumption in this entire article.

An antacid appearing to help does not rule out a heart attack. Cardiac pain naturally rises and falls in waves, so relief that arrives ten or twenty minutes after a tablet may simply be the wave passing. We regularly see patients who took an antacid, felt better, and arrived hours later with a completed heart attack that could have been treated far earlier.

The rule is simple: relief from an antacid is not evidence. It only counts if this is a pattern you have had many times before and nothing about tonight is different.

The one presentation that gets missed most often

A heart attack affecting the lower wall of the heart very often presents as pain in the upper abdomen with nausea and vomiting — no chest pain at all. It is mistaken for gastritis, food poisoning, or "something I ate".

So: upper abdominal pain with sweating, or with breathlessness, or in a person with diabetes, is a chest pain until an ECG says otherwise.

Three more traps worth knowing:

1. Diabetes blunts pain. People with long-standing diabetes may have a heart attack with almost no pain — only breathlessness, sweating, extreme tiredness or giddiness. The same is true of many elderly patients.

2. Women's symptoms are more often atypical — fatigue, breathlessness, nausea, jaw or back discomfort rather than classic crushing chest pain. This is a large part of why women reach hospital later.

3. Being young or fit does not exclude it. Coronary disease appears roughly a decade earlier in Indians than in Western populations. A heart attack in the thirties or forties is uncommon, but it is not rare, and we see it.

Side by side

Use this table to decide whether to come in — never to decide to stay home. Every row here has exceptions.

What should I do if I am not sure?

If any doubt exists, treat it as cardiac. The cost of being wrong is not symmetrical: an unnecessary hospital visit costs you a few hours, while a missed heart attack costs heart muscle that does not grow back.

Right now:

1. Stop everything and sit or lie down. Do not walk it off, do not finish the task, do not climb the stairs.

2. Call for an ambulance or arrange for someone else to bring you. Do not drive yourself — if you lose consciousness at the wheel, two people are hurt instead of one.

3. Do not wait to see whether an antacid works. Do not wait for morning.

4. If someone has advised aspirin for you in the past for this situation, or an emergency service advises it now, it may be chewed — but do not take it on your own if you have a bleeding problem, an ulcer, or a known allergy.

5. Carry your old papers — previous ECGs, prescriptions, sugar and cholesterol reports. They change how quickly we can act.

Cardiac muscle begins to die within the first hour or two. Treatment given early preserves heart function in a way that the same treatment given six hours later cannot.

What happens when you reach casualty?

An ECG is done within minutes of arrival — before registration formalities, before payment. A blood test for cardiac enzymes usually follows, and both are frequently repeated after a few hours, because a single early normal result does not close the question. You are kept on a monitor while this is happening.

At Shree Kkasturi Medicare, our 24×7 casualty, 24×7 pathology laboratory and ICCU allow immediate assessment, monitoring and stabilisation at any hour. Where a patient needs an angioplasty or cardiac surgery, we stabilise first and coordinate transfer to a cardiac centre — the critical step is that the ECG happens now, not that you find the right hospital first.

And please hear this clearly: if you come in and it turns out to be acidity, that is a good outcome, not a wasted trip. We would far rather rule out a heart attack a hundred times than miss one.

What if it really is just acidity — how do I stop it?

Once cardiac causes have been excluded, most reflux improves with unglamorous changes: finishing dinner two to three hours before lying down, smaller portions, cutting back on very oily and very spicy food, reducing tea, coffee, alcohol and tobacco, raising the head end of the bed rather than piling up pillows, and losing weight around the abdomen if that applies.

See a doctor rather than living on antacids if the burning is happening more than twice a week, if you have difficulty swallowing or food sticking, unexplained weight loss, vomiting of blood, black stools, or persistent vomiting. These need investigation, not a stronger tablet.

Frequently asked questions

Q. The pain went away after I burped. Can I relax? A. Not on that basis alone. Belching brings relief in some cardiac events too, and many patients report exactly this before a confirmed heart attack. Burping is not a diagnostic test. If sweating, breathlessness or radiating pain accompanied it, come in regardless.

Q. My ECG was normal. Am I in the clear? A. Not necessarily. An ECG taken very early in a heart attack can be normal. This is precisely why we repeat it and add a cardiac enzyme blood test. If you were sent home with a normal ECG but the pain returns, come back — do not assume the earlier result still holds.

Q. I'm 34, I don't smoke, and I go to the gym. Surely not? A. Lower risk is not no risk. Coronary disease presents about a decade earlier in Indians, and family history, diabetes and cholesterol matter independently of fitness. Age alone is not a reason to stay home.

Q. Can severe acidity actually cause chest pain this bad? A. Yes. Oesophageal spasm can produce pain every bit as severe as cardiac pain, and it is a common reason for a casualty visit. That is a diagnosis made after the heart has been cleared, not before.

Q. Which tests should I get if this keeps happening? A. That depends on your risk profile and should be decided in consultation. Typically it starts with an ECG, blood sugar and a lipid profile, and depending on the picture may include an echocardiogram, a stress test, or an upper GI endoscopy. Do not self-order a panel of tests — the choice of test is the medical decision.

Q. Should I keep sorbitrate or aspirin at home just in case? A. Only if a doctor has prescribed them for you specifically. Keeping cardiac medication at home to self-administer during an episode is not a substitute for reaching a hospital, and taking someone else's tablet can be harmful.

Shree Kkasturi Medicare Pvt. Ltd. is a 45-bed NABH Entry Level accredited multispecialty hospital in Bhayander West, serving Mira-Bhayander since 2001. Our casualty department, pathology laboratory, ECG and ICCU are available 24×7, including nights and holidays. Free ambulance pick-up is available.

Disclaimer: This article provides general health information and is not a substitute for consultation, examination or diagnosis by a qualified doctor. It must not be used to decide that chest pain is safe to ignore. If you or someone near you has chest discomfort, breathlessness or unexplained sweating, go to the nearest casualty department immediately.