A burning sensation in your chest is most often caused by acid reflux, where stomach acid flows back into the esophagus and irritates its lining. But chest burning can also come from inflammation in the chest wall, lung lining, or esophagus itself, and in some cases it signals a heart attack. The cause usually becomes clear based on when the burning happens, how long it lasts, and what other symptoms come with it.
Acid Reflux and Heartburn
Heartburn is the single most common reason for a burning chest. It produces a burning sensation that starts behind the breastbone and can rise toward the throat, often worse after eating, lying down, or bending over. Certain foods trigger it more reliably: spicy or fatty meals, citrus, chocolate, coffee, and alcohol all relax the valve between your stomach and esophagus, letting acid creep upward.
Occasional heartburn is normal. When it happens more than twice a week or starts interfering with daily life, it crosses into gastroesophageal reflux disease (GERD). The American Gastroenterological Association recommends acid-reducing medications as the first-line treatment for GERD, with stronger options available if a standard dose doesn’t bring relief. For people who get heartburn only now and then, a short course of over-the-counter acid reducers or using them as needed is usually enough.
Esophageal Inflammation Beyond Acid
Acid isn’t the only thing that can inflame your esophagus. Three other forms of esophagitis cause similar chest burning but have different roots.
Eosinophilic esophagitis is an allergic reaction in which certain white blood cells build up in the esophageal lining, typically triggered by a food allergen. It tends to cause burning along with difficulty swallowing and the sensation that food is getting stuck. Pill-induced esophagitis happens when a medication dissolves against the esophageal wall instead of reaching the stomach, often because a pill was taken with too little water or right before lying down. Common culprits include certain antibiotics, anti-inflammatory painkillers, and osteoporosis medications. Infectious esophagitis, caused by viruses, bacteria, or fungi, is less common and primarily affects people with weakened immune systems.
Costochondritis: Chest Wall Inflammation
Costochondritis is inflammation of the cartilage connecting your ribs to your breastbone. It produces a sharp, aching, or pressure-like pain right at the front of the chest that can easily be mistaken for something more serious. The key distinguishing feature: the pain worsens when you press on the area, take a deep breath, cough, or twist your upper body. It often follows a period of heavy lifting, intense exercise, or even a bad cough.
There’s no quick fix. Treatment focuses on managing pain while the inflammation resolves on its own, which can take several weeks or longer. Over-the-counter anti-inflammatory medications, rest, and gentle stretching are the standard approach.
Pleurisy: Lung Lining Inflammation
If your chest burning gets noticeably worse every time you breathe in, pleurisy is a likely explanation. The lungs are surrounded by two thin layers of tissue called the pleura, and when these layers become inflamed, they rub against each other like sandpaper with every breath. The pain is typically sharp, worsens when you breathe, cough, or sneeze, and lessens or stops entirely when you hold your breath. It can also spread to your shoulders or back.
Pleurisy is usually caused by a viral infection, but it can also develop after pneumonia, a blood clot in the lung, or an autoimmune condition. Shortness of breath often accompanies it, not because the lungs can’t expand, but because you instinctively take shallower breaths to avoid the pain.
How to Tell Heartburn From a Heart Attack
This is the question that matters most, and it’s genuinely difficult because the two can feel similar. Both can cause chest discomfort that comes and goes, and both don’t always announce themselves with dramatic symptoms.
Heartburn typically produces a burning sensation centered in the chest and upper abdomen, often with a sour taste in the mouth. It tends to be linked to meals and responds to antacids. A heart attack, by contrast, more often feels like tightness, pressure, squeezing, or a dull ache in the center of the chest. The pain frequently spreads to the shoulders, neck, jaw, or arms. Other warning signs include:
- Cold sweat or clammy skin
- Lightheadedness, weakness, or dizziness
- Shortness of breath
- Nausea or vomiting
- Rapid or irregular heartbeat
Not everyone gets the classic crushing chest pain during a heart attack. Some people, particularly women, experience subtler symptoms like jaw pain, unexplained fatigue, or shortness of breath without obvious chest discomfort. If you have any combination of the symptoms above and can’t confidently attribute your chest burning to something else, call 911 rather than driving yourself to the hospital. Emergency departments prioritize chest pain and can run an ECG within minutes of arrival.
Patterns That Point to the Cause
Paying attention to timing and triggers can help you and your doctor narrow things down quickly. Burning that starts 30 to 60 minutes after eating and gets worse when you lie down points strongly to acid reflux. Pain that sharpens with every breath and eases when you hold your breath suggests pleurisy. Tenderness when you press on the front of your chest, especially near the breastbone, is characteristic of costochondritis. Burning that came on suddenly during exertion, is accompanied by sweating or lightheadedness, or radiates to your arm, neck, or jaw needs immediate evaluation for a cardiac cause.
Chest burning that keeps returning over weeks or months without a clear trigger is worth investigating even if it doesn’t feel urgent. Chronic reflux can damage the esophageal lining over time, and conditions like eosinophilic esophagitis are often caught late because people assume it’s just heartburn. A clear diagnosis means the right treatment, not just symptom relief on repeat.