Chest pain has dozens of possible causes, and most of them are not a heart attack. Fewer than 10% of people who go to the emergency room for chest pain are ultimately diagnosed with a serious cardiac event. That said, chest pain is one symptom you should never dismiss without understanding what’s behind it, because the causes range from completely harmless muscle strain to life-threatening emergencies.
Heart-Related Chest Pain
The cause most people worry about is a heart attack, and for good reason. Heart-related chest pain typically feels like pressure, squeezing, or fullness in the center of the chest. It often lasts more than 15 minutes, though it can come and go. The pain may radiate to your left arm, jaw, back, or shoulder. You might also experience sweating, nausea, lightheadedness, or shortness of breath alongside it.
Not all heart-related pain means you’re having a heart attack. A condition called stable angina causes chest discomfort during physical activity or when walking in cold weather. It’s predictable, feels similar each time it happens, and usually lasts five minutes or less before going away with rest. Stable angina signals that your heart isn’t getting enough blood flow during exertion, but it’s a chronic condition you can manage rather than an immediate emergency.
Unstable angina is a different story. It strikes unpredictably, can happen at rest, and lasts 20 minutes or longer. If the pain doesn’t improve with rest and keeps getting worse, the blood supply to your heart muscle may be critically low. Unstable angina is often the step right before a heart attack and needs immediate medical attention.
How Chest Pain Differs in Women
Women can experience all the classic heart attack symptoms, but they’re more likely than men to have less obvious signs. According to the American Heart Association, women frequently report unusual tiredness and weakness, nausea, shortness of breath, anxiety, and pain in the back, shoulder, or stomach rather than the stereotypical crushing chest pressure. Some women describe their symptoms as flu-like in the days or weeks leading up to a cardiac event. These less recognizable patterns are one reason heart attacks in women are more likely to be missed or dismissed.
Acid Reflux and Digestive Causes
Gastroesophageal reflux disease, commonly called GERD or acid reflux, is one of the most frequent non-cardiac causes of chest pain. It produces a burning sensation behind the breastbone that rises toward the throat. The pain often worsens after eating, when lying down, or when bending over. It can feel alarmingly similar to heart pain, which is why it’s sometimes called “heartburn” despite having nothing to do with the heart.
The key differences: reflux pain tends to have a burning quality rather than a squeezing or pressure sensation, it’s often tied to meals, and it may improve with antacids. That said, these distinctions aren’t always reliable, especially in the moment. If you’re not sure, it’s safer to treat chest pain as potentially cardiac until proven otherwise.
Musculoskeletal Chest Pain
Your chest wall is a complex structure of bones, cartilage, and muscles, and any of those can become inflamed or strained. Costochondritis, an inflammation where the ribs connect to the breastbone, is one of the most common causes of chest pain in people who visit their doctor. The hallmark feature is tenderness when you press on the area. The pain is usually localized to one or two spots where the ribs meet the sternum and gets worse with movement, deep breathing, or coughing.
A related condition called slipping rib syndrome causes pain along the lower chest wall or upper abdomen, with tenderness along the edge of the rib cage. Musculoskeletal chest pain can feel sharp and alarming, but it’s generally harmless and resolves on its own or with over-the-counter anti-inflammatory medication. The biggest clue is reproducibility: if you can press on a spot and recreate the exact pain, it’s likely coming from the chest wall rather than the heart or lungs.
Lung-Related Causes
A pulmonary embolism, which is a blood clot that travels to the lungs, causes chest pain that’s often sharp and worsens when you breathe in deeply. It can feel similar to a heart attack, but it’s typically accompanied by sudden shortness of breath that doesn’t improve with rest, a rapid or irregular heartbeat, and sometimes coughing. The pain may also intensify when you bend or lean over. Pulmonary embolism is a medical emergency.
Other lung conditions that cause chest pain include pneumonia, pleurisy (inflammation of the lining around the lungs), and a collapsed lung. These tend to produce pain that’s clearly linked to breathing, which helps distinguish them from cardiac causes where the pain is more constant.
Panic Attacks and Anxiety
Panic attacks can produce chest pain that genuinely mimics a heart attack: tightness, pressure, racing heartbeat, shortness of breath, and an overwhelming sense of doom. The overlap is so significant that many people end up in the emergency room convinced they’re having a cardiac event. Panic-related chest pain typically peaks within 10 minutes and resolves within 20 to 30 minutes. Heart attack pain, by contrast, usually lasts more than 15 minutes and often comes with warning signs in the hours, days, or weeks beforehand, like recurring chest pressure during activity.
One important note: having anxiety doesn’t protect you from also having heart disease. If your chest pain is new, unusually severe, or accompanied by the warning signs described below, take it seriously regardless of your history with panic attacks.
Warning Signs That Need Emergency Care
Certain combinations of symptoms suggest a potentially life-threatening cause. Call emergency services if your chest pain includes any of the following:
- Crushing, squeezing, or pressure-like quality lasting more than a few minutes
- Pain radiating to your left arm, jaw, back, or neck
- Sudden onset of shortness of breath, especially at rest
- Sweating, nausea, or vomiting alongside the chest pain
- Tearing or ripping pain in the chest or back, which can signal an aortic emergency
- Pain triggered by exertion that doesn’t resolve with rest
Many people delay seeking help because they feel uncertain or don’t want to “overreact.” But fewer than 1 in 10 emergency room visits for chest pain turn out to be a serious cardiac event, which means the vast majority of people who come in worried leave reassured. Emergency departments are built for exactly this kind of evaluation.
What Happens During an Evaluation
When you arrive at an emergency room or doctor’s office with chest pain, the first tests are usually fast and straightforward. An electrocardiogram (EKG) records your heart’s electrical activity and can reveal patterns that suggest a heart attack or other cardiac problems within minutes. A blood test checks for proteins that leak from damaged heart muscle. These proteins can be detected at very low levels, allowing doctors to rule out a heart attack quickly in most cases or flag one early.
Depending on your symptoms, you may also get a chest X-ray to look at your lungs and heart size, or blood work to check for a clot in the lungs. The goal is to identify or rule out the dangerous causes first, then work through the more common, less serious possibilities. For many people, the entire evaluation takes a few hours and ends with reassurance and a plan to follow up with their primary care doctor.