man holding chest
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Chest Pain

This is the most common sign of a heart attack, but it's not always a crushing, sudden pain. It could be more of an uncomfortable feeling -- like squeezing or heaviness. You might mistake it for heartburn. It may last for more than a few minutes or go away and come back

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woman with back pain
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Arm or Back Pain

Men typically feel it in the left arm, but women may hurt in both. Your arms could feel heavy or "useless." It could be a sign of angina or a heart attack.

Pain may start in your chest, then move to your upper or lower back. Be suspicious if the pain comes out of nowhere or wakes you up at night and doesn't seem linked to a particular joint or muscle.

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woman with neck pain
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Neck or Jaw Pain

You can feel pain above the shoulders when you're having a heart attack. Your lower jaw on one or both sides may hurt or feel tight. Your neck may ache, or you could have a choking or burning feeling in your throat.

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exhausted construction worker
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Unusual Fatigue

Everybody's busy, so it's normal to feel tired once in a while. But it's a red flag for heart attack if you suddenly get wiped out at times you usually wouldn't. Maybe you're extra worn out after your typical exercise routine or you're exhausted just walking to the bathroom. You also might feel drained but still find it hard to sleep.

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woman sick in bathroom
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Fainting and Nausea

You may feel like you're going to pass out. Fainting happens when your blood pressure is low and your heart isn't pumping the right amount of oxygen to your brain. It might be because you're overheating, but heart conditions could also be the culprit.

Nausea and lack of appetite can also be signs of trouble with your ticker.

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sweaty man
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Sweating and Trouble Breathing

If you're having a heart attack, you may break out in a sweat even if you're not pushing yourself hard. You could feel cold and clammy. You may be short of breath, like you've run a marathon, even if you haven't moved off your couch. When you lie down, it may be even harder to breathe.

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woman coughing into arm
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Coughing and Wheezing

Shortness of breath with a regular cough and wheeze can be signs of heart failure. That's when your heart doesn't pump well enough to supply your body with all the blood and oxygen it needs. When you have heart failure, blood and fluids can back up into your lungs. You may have a hard time breathing or hear a rattling sound when you inhale. You might cough up pinkish mucus.

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You could have it in your feet, ankles, legs, or stomach if you have heart failure. You may notice that your shoes feel tight. As blood flow out of your heart slows down, blood going back to it through the veins can back up. That causes fluid to collect in spots that it shouldn't. Your kidneys can't get rid of water and salt, which leads to more swelling.

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woman tired on stairs
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Trouble Getting Around

When you have heart failure, your body moves blood and the oxygen it carries away from areas that aren't as important, like your limbs, and sends it to the brain and heart. That makes moving around harder. Regular activities, like walking the dog or going up and down stairs, may be hard to do. As your heart gets weaker, simply getting dressed or walking across the room can tire you out.

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woman checking neck pulse
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Rapid Heart Rate

With heart failure, your ticker may beat fast to make up for its lack of pumping power. You may feel like your heart is racing.

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heart rate reading
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Irregular Heartbeat

A heart rhythm disorder like atrial fibrillation (AFib) can cause your ticker to beat fast and out of sync. Some people describe the feeling as a flutter or like a fish is flopping around inside their chest.

AFib can lead to blood clots and stroke if you don't treat it. It's possible you might not notice anything unusual about the way your heart beats but you might feel short of breath, tired, or lightheaded.

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Loud Snoring

If it's happening every night, you could have sleep apnea. That's a condition which causes pauses in your breathing while you sleep. It's linked to atrial fibrillation and may raise your risk of high blood pressure and type 2 diabetes. If you don't get treatment for your sleep apnea, you may have a higher chance of life-threatening heart trouble.  

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man disappointed in bed
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Erectile Dysfunction (ED)

If you have this problem often, it could be a sign that you have heart disease. Blood vessels in your penis may be clogged with plaque, just like vessels around your heart can get blocked. Without good blood flow, it's hard to get and keep an erection. Talk to your doctor if you have ED to figure out what's going on.

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When to Get Emergency Help

Get medical help right away if you think that you or someone you're with has any of the symptoms of a heart attack. Quick treatment can cut down the chances of damage to your heart. Call 911 if you have:

  • Pain, pressure, or squeezing in your chest
  • Pain or discomfort that spreads to your shoulders, back, neck, or arms
  • Shortness of breath
  • Lightheadedness, dizziness, or fainting
  • Sweating and nausea
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Sources | Medically Reviewed on 07/29/2020 Reviewed by Carol DerSarkissian, MD on July 29, 2020


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American Heart Association: "Warning Signs of Heart Attack, Stroke, and Cardiac Arrest," "Heart Attack Symptoms in Women," "Understanding Blood Pressure Readings," "Warning Signs of Heart Failure," "Causes and Risks for Heart Failure," "Sleep Apnea and Heart Disease, Stroke," "Syncope (Fainting)."

Cleveland Clinic: "Is That Pain in Your Chest Heartburn or a Heart Attack?" "Women: Don't Ignore These 3 Subtle Heart Attack Symptoms."

National Heart Foundation of Australia: "Heart Attack Symptoms."

Richard Wright, MD, cardiologist, Providence Saint John's Health Center, Santa Monica, CA.

National Library of Medicine: "Heart Failure."

National Heart, Lung, and Blood Institute: "Heart Failure."

Heart Rhythm Society: "Heart Rhythm Society wants Americans to Know What 'A-Fib Feels Like' During Atrial Fibrillation Awareness Month."

Harvard Medical School:  "Atrial fibrillation: When the heart loses its rhythm."

Society for Cardiovascular Angiography and Interventions: "Do You Snore Loudly or Have Sleep Apnea?" "Erectile Dysfunction (ED): A Primer."

Mayo Clinic: "Heart attack."

Reviewed by Carol DerSarkissian, MD on July 29, 2020

This tool does not provide medical advice. See additional information.

THIS TOOL DOES NOT PROVIDE MEDICAL ADVICE. It is intended for general informational purposes only and does not address individual circumstances. It is not a substitute for professional medical advice, diagnosis or treatment and should not be relied on to make decisions about your health. Never ignore professional medical advice in seeking treatment because of something you have read on the WebMD Site. If you think you may have a medical emergency, immediately call your doctor or dial 911.