# Heart Attack Symptoms: Warning Signs and When to Call 911

Source: https://jilllebofsky.com/heart-attack-symptoms/
By Claire Hadley, Reviews Editor. Updated November 11, 2026. Facts checked November 11, 2026.

**Quick answer:** The main heart attack symptom is chest pressure, squeezing or pain that lasts more than a few minutes or goes away and comes back. Pain in the arm, back, neck or jaw, shortness of breath, a cold sweat, nausea and lightheadedness are common too. About 1 in 5 heart attacks are silent. If you suspect one, call 911 and do not drive yourself.

To write this guide to heart attack symptoms, we read the National Heart, Lung, and Blood Institute (NHLBI) heart attack pages, the CDC and American Heart Association warning-sign pages, MedlinePlus, and six large studies on symptoms and treatment delays. We checked every number against its source, as our review method for health guides requires.
The most common sign is chest pressure, squeezing or pain that lasts more than a few minutes or goes away and comes back.[8] About 1 in 5 heart attacks are silent, so the absence of chest pain does not rule one out.[9] If you suspect a heart attack, call 911.
Heart attack at a glance
What it isBlood flow to part of the heart muscle is blocked; the longer it lasts, the more muscle is damaged[2]
How commonAbout 805,000 heart attacks a year in the US, 605,000 of them first attacks[9]
Main symptomChest pain, heaviness or discomfort in the center or left side of the chest[1]
Other symptomsArm, back, neck, jaw or stomach pain, shortness of breath, cold sweat, nausea, lightheadedness[10]
Silent attacksAbout 1 in 5 heart attacks do damage without the person knowing[9]
First stepCall 911; do not drive yourself or let someone else drive you[1]
Standard careClot-stopping medicines, clot busters, a stent to open the artery, or bypass surgery[4]

Heart attack warning signs and silent heart attacks. Sources: CDC, NHLBI, American Heart Association, Canto et al. JAMA 2000.
What are the most common heart attack symptoms?
The most common heart attack symptom is chest pain, heaviness or discomfort in the center or left side of the chest.[1] It often feels like pressure, squeezing or fullness rather than a sharp stab, and it lasts more than a few minutes or fades and returns.[8] Other signs can show up with it or on their own.

Pain or discomfort in one or both arms, the back, neck, jaw or stomach.[10]
Shortness of breath, with or without chest discomfort. The CDC notes it can start before the chest discomfort.[8]
Breaking out in a cold sweat, or nausea.[10]
Feeling weak, lightheaded or faint.[8]
Unusual tiredness, sometimes for days, which is more common in women.[1]

Symptoms can be mild or severe, and they may come and go over several hours.[1] Many people expect a sudden collapse and wait it out when the real thing feels like a dull ache. The longer the heart goes without enough oxygen, the more damage it takes.[2]
What does a heart attack feel like?
Most people describe a heart attack as pressure, squeezing, fullness or pain in the chest that does not ease with rest.[10] Angina, the chest pain of narrowed arteries, usually goes away within a few minutes of rest, while heart attack pain does not go away with rest or medicine.[1]
Chest pain is still the main symptom in men and women. In the VIRGO study of 2,009 women and 976 men aged 18 to 55, chest pain was reported by 87.0% of women and 89.5% of men.[18] The pain may spread to the arms, back, neck or jaw, and some people mistake it for an upset stomach.[10]
Shortness of breath while resting is another clue. NHLBI says it is more common in older adults during a heart attack.[1] If you already have angina and your usual pain lasts longer, feels worse or does not settle with rest or your prescribed medicine, treat it as a possible heart attack and call 911.[1]
Are heart attack symptoms different in women?
Women usually have chest pain too, but they are more likely than men to have other symptoms with it or in place of it.[6] NHLBI lists shoulder, back or arm pain, shortness of breath, unusual tiredness and weakness, upset stomach and anxiety as more common in women.[6]
In the VIRGO study of adults aged 18 to 55, 61.9% of women reported three or more symptoms besides chest pain, compared with 54.8% of men.[18] Women in VIRGO were also more likely to be told by a health care provider that their symptoms were not heart related: 53% of women versus 37% of men.[18]
NHLBI adds that women may wait longer to get care, and that first screening tests may miss an early or atypical heart attack.[6] Some causes are also more common in women, such as spontaneous coronary artery dissection (SCAD) in women under 50 and around pregnancy.[3]
If you are sent home and the symptoms come back or get worse, go back. Heart damage is often confirmed by a troponin blood test repeated over time, so one normal result early on is not the whole story.[5]
Can you have a heart attack without chest pain?
Yes. A silent heart attack damages the heart with few or no symptoms, and the CDC estimates that about 1 in 5 heart attacks are silent.[9] NHLBI says silent heart attacks are more common in older adults and in people who have high blood sugar or diabetes.[1]
Even heart attacks that people notice can arrive without chest pain. A 2000 study in JAMA looked at 434,877 heart attack patients and found 33% had no chest pain when they reached the hospital.[17] Those patients were more often women (49.0% versus 38.0%) and more often had diabetes (32.6% versus 25.4%).[17]
People without chest pain arrived later on average (7.9 hours versus 5.3 hours), and 23.3% died in the hospital, compared with 9.3% of those with chest pain.[17]
Silent attacks also carry long-term risk. The ARIC study followed 9,498 adults for a median of 8.9 years and found 317 silent heart attacks (3.3%) against 386 recognized ones (4.1%).[19] A silent heart attack was linked to about three times the risk of dying from coronary heart disease (hazard ratio 3.06).[19]
How can you tell a heart attack from a panic attack or heartburn?
You cannot reliably tell them apart at home, so new or unexplained chest pain needs emergency care. Panic attacks can cause chest pain, a pounding heart, sweating and trouble breathing, and people often feel as if they are having a heart attack.[11] Heartburn is a burning feeling behind the breastbone.[13]
Heart attack, panic attack and heartburn comparedFeatureHeart attackPanic attackHeartburn
Chest feelingPressure, squeezing, fullness or pain[10]Chest pain with a pounding heart[11]Burning behind the breastbone[13]
Other signsArm, back or jaw pain, cold sweat, nausea, breathlessness[10]Sweating, trembling, dizziness, trouble breathing[11]Burning that can reach the throat[12]
How longMore than a few minutes, or comes and goes[8]A few minutes to over an hour[11]Can keep coming back, which is a sign of GERD[13]
DangerLife threatening; call 911[7]Not life threatening, though doctors may check the heart[11]Crushing chest pain with it could be a heart attack[12]

Panic attacks and heart attacks share chest pain, sweating and breathlessness, and a panic disorder diagnosis may include heart tests to rule out other causes.[11] In VIRGO, women were close to twice as likely as men to think their heart attack symptoms were stress or anxiety (20.9% versus 11.8%).[18]
MedlinePlus warns that heartburn with other symptoms, such as crushing chest pain, could be a heart attack.[12] If you are unsure, the safe call is 911.[7]
What should you do if you think you are having a heart attack?
Call 911 at once, even if you are not sure it is a heart attack.[7] The American Heart Association calls 911 almost always the fastest way to get lifesaving treatment, and NHLBI notes that people who arrive by ambulance often get faster treatment at the hospital.[10][1]

Stop what you are doing and call 911. Do not wait to see whether the pain passes.[7]
Do not drive yourself, and do not let a friend drive you. Emergency crews can start care on the way.[1]
Follow the 911 operator. NHLBI says the operator or emergency team can give you advice, which may include taking aspirin.[1] Take aspirin only if they tell you to, since it can cause stomach bleeding in some people.[4]
If a doctor prescribed nitroglycerin for angina, take it as directed, but still call. Heart attack pain does not go away with rest or medicine.[1]
Note the time the symptoms started. In the ISIS-2 trial, a clot-busting drug helped most when it was given within 4 hours.[14]
If the person collapses or stops breathing normally, the heart may have stopped. Start CPR and use a defibrillator (AED) if one is close, as the CDC advises.[8]

Call 911 right away if you have

Chest pressure, squeezing, fullness or pain that lasts more than a few minutes, or goes away and comes back.[8]
Pain spreading to one or both arms, the back, neck, jaw or stomach.[10]
Shortness of breath, with or without chest discomfort.[10]
A cold sweat, nausea or lightheadedness together with any of the signs above.[10]
Fainting, or feeling weak and faint.[8]
Angina that lasts longer than usual or does not ease with rest or your medicine.[1]

A heart attack is not the same as cardiac arrest, but it can trigger one.[2] So call even when the symptoms seem mild.
How do doctors diagnose and treat a heart attack?
An electrocardiogram (EKG) is usually the first test, often done within minutes of arrival, followed by blood tests for troponin that are repeated over time.[5] Treatment aims to restore blood flow fast, using medicines that stop clots, clot-busting drugs, or a procedure to open the blocked artery.[4]
Doctors may start treatment before the diagnosis is confirmed.[4] Standard options include aspirin or other medicines to stop more clots forming, nitroglycerin, thrombolytic (clot-busting) drugs, angioplasty with a stent, and coronary artery bypass surgery.[4] No supplement treats a heart attack, and none should ever delay a 911 call.
How fast treatment changes outcomes
Studies on treatment and delayStudyWho and how manyResult
ISIS-2, Lancet 198817,187 people with a suspected heart attackAspirin 160 mg a day cut vascular deaths from 11.8% to 9.4%; aspirin plus streptokinase gave 8.0% versus 13.2%[14]
ISIS-2 timingSame trial, by hours since symptoms beganStreptokinase cut the odds of death 35% within 4 hours, but 16% at 5 to 12 hours[14]
De Luca, Circulation 20041,791 patients treated with angioplastyEach 30 minutes of delay raised the 1-year risk of death by about 7.5% (relative risk 1.075)[15]
Menees, NEJM 201396,738 hospital admissions at 515 hospitalsMedian door-to-balloon time fell from 83 to 67 minutes, yet in-hospital deaths stayed near 4.7%[16]

The guideline target for opening the artery after arrival is 90 minutes or less.[16] In the Menees data, faster hospital times alone did not lower deaths, so our reading is that the minutes before arrival, when people decide whether to call, are the part patients control.[16][15]
Most people survive heart attacks and go on to live active lives.[20] Recovery often includes cardiac rehabilitation, and Medicare and most insurance plans cover a standard program of 36 supervised sessions over 12 weeks.[20]
What causes a heart attack, and who is most at risk?
Most heart attacks come from coronary artery disease, where plaque in a heart artery breaks open and a blood clot blocks the flow.[3] Less common causes include a spasm of the artery, a tear in its wall (SCAD), and MINOCA, a heart attack without blocked arteries, which is more common in women and younger people.[3]
Risk rises with age, after 45 for men and after 55 for women.[3] A family history counts when a father or brother had heart disease before 55, or a mother or sister before 65.[3] About half of Americans have at least one of the three key risk factors: high blood pressure, high cholesterol or smoking.[8]
Other risks include diabetes, obesity, high triglycerides, an unhealthy diet, too little activity, and preeclampsia during pregnancy.[3] Smoking, cocaine, extreme cold and severe stress can trigger artery spasm.[3] Age, sex, family history and race or ethnicity cannot be changed, but the rest often can.[7] After one heart attack, the risk of another is higher.[20]
A heart risk checklist

Know your blood pressure numbers, and use our guide on how to lower blood pressure if they run high.[8]
Get your cholesterol checked, and read how to lower cholesterol for the steps with the best evidence.[7]
If you smoke, quitting removes a major risk factor and a spasm trigger.[3]
Write down your family history, with the ages relatives were diagnosed.[3]
Ask your doctor before starting daily aspirin, since it can cause stomach bleeding.[3][4]
If you are weighing a supplement such as red yeast rice for cholesterol, clear it with your doctor and keep taking prescribed medicine.
Teach your household the warning signs and to call 911 first.[10]

Bottom line
Heart attack symptoms are often less dramatic than people expect. Chest pressure that lasts more than a few minutes is the classic sign, but arm, jaw or back pain, breathlessness, a cold sweat, nausea and unusual tiredness count too, and about 1 in 5 attacks are silent.[8][9]
For most people, the right move with new chest discomfort is to call 911 instead of waiting it out. A false alarm costs a few hours in the emergency room, while each 30 minutes of delay is tied to a higher risk of death.[15] For longer-term prevention, start with blood pressure, cholesterol and smoking, and browse our heart and circulation guides for the evidence on each.

## Frequently asked questions

### How long do heart attack symptoms last?

Chest discomfort from a heart attack usually lasts more than a few minutes, or it goes away and comes back. Symptoms can come and go over several hours, and unusual tiredness may last for days, especially in women.

### Can you have heart attack symptoms for days before?

Some people do. NHLBI says unusual tiredness can last for days before a heart attack, and that symptoms may come and go over several hours. Any new chest discomfort or breathlessness deserves prompt medical attention, not a wait and see approach.

### Is a heart attack the same as cardiac arrest?

No. A heart attack happens when blood flow to part of the heart muscle is blocked. Cardiac arrest is when the heart suddenly stops beating. A heart attack can trigger cardiac arrest, which needs CPR and a defibrillator right away.

### Should I chew aspirin if I think I am having a heart attack?

Call 911 first and follow the operator's advice, which may include aspirin. Take it only if they tell you to. Aspirin helps stop clots, but it can cause stomach bleeding in some people and is not safe for everyone.

### Can young people have a heart attack?

Yes. The VIRGO study enrolled nearly 3,000 heart attack patients aged 18 to 55. Causes such as SCAD are more common in women under 50, and MINOCA is more common in younger people than in older adults.

## Sources

1. [Heart Attack: Symptoms](https://www.nhlbi.nih.gov/health/heart-attack/symptoms). NHLBI, NIH
2. [What Is a Heart Attack?](https://www.nhlbi.nih.gov/health/heart-attack). NHLBI, NIH
3. [Heart Attack: Causes and Risk Factors](https://www.nhlbi.nih.gov/health/heart-attack/causes). NHLBI, NIH
4. [Heart Attack: Treatment](https://www.nhlbi.nih.gov/health/heart-attack/treatment). NHLBI, NIH
5. [Heart Attack: Diagnosis](https://www.nhlbi.nih.gov/health/heart-attack/diagnosis). NHLBI, NIH
6. [Heart Attacks in Women](https://www.nhlbi.nih.gov/health/heart-attack/women). NHLBI, NIH
7. [Heart Attack](https://medlineplus.gov/heartattack.html). MedlinePlus, National Library of Medicine
8. [About Heart Attack Symptoms, Risk, and Recovery](https://www.cdc.gov/heart-disease/about/heart-attack.html). CDC, 2024
9. [Heart Disease Facts](https://www.cdc.gov/heart-disease/data-research/facts-stats/index.html). CDC, 2024
10. [Warning Signs of a Heart Attack](https://www.heart.org/en/health-topics/heart-attack/warning-signs-of-a-heart-attack). American Heart Association, 2024
11. [Panic Disorder](https://medlineplus.gov/panicdisorder.html). MedlinePlus, National Library of Medicine
12. [Heartburn](https://medlineplus.gov/heartburn.html). MedlinePlus, National Library of Medicine
13. [Symptoms and Causes of GER and GERD](https://www.niddk.nih.gov/health-information/digestive-diseases/acid-reflux-ger-gerd-adults/symptoms-causes). NIDDK, NIH
14. [Randomised trial of intravenous streptokinase, oral aspirin, both, or neither among 17,187 cases of suspected acute myocardial infarction: ISIS-2](https://pubmed.ncbi.nlm.nih.gov/2899772/). Lancet, 1988
15. [Time delay to treatment and mortality in primary angioplasty for acute myocardial infarction: every minute of delay counts](https://pubmed.ncbi.nlm.nih.gov/15007008/). Circulation, 2004
16. [Door-to-balloon time and mortality among patients undergoing primary PCI](https://pubmed.ncbi.nlm.nih.gov/24004117/). New England Journal of Medicine, 2013
17. [Prevalence, clinical characteristics, and mortality among patients with myocardial infarction presenting without chest pain](https://pubmed.ncbi.nlm.nih.gov/10866870/). JAMA, 2000
18. [Sex differences in the presentation and perception of symptoms among young patients with myocardial infarction (VIRGO)](https://pmc.ncbi.nlm.nih.gov/articles/PMC5822747/). Circulation, 2018
19. [Silent myocardial infarction and its prognosis in a community-based cohort (ARIC)](https://pubmed.ncbi.nlm.nih.gov/27185168/). Circulation, 2016
20. [Heart Attack: Recovery](https://www.nhlbi.nih.gov/health/heart-attack/recovery). NHLBI, NIH

General information from JillLebofsky, not medical advice.