Heartburn is a burning sensation felt behind the breastbone. It is a symptom that is commonly linked to acid reflux [a] and is often triggered by food. Lying down, bending, lifting, and performing certain exercises can exacerbate heartburn. That burning sensation in your chest? It’s probably heartburn. Constant heartburn symptoms could be a sign of something more serious. Here are 6 signs that suggest your heartburn could be a symptom of something more serious. Read on to find out what is really causing the uncomfortable sensations and when to seek an expert opinion. To get rid of heartburn quickly, you can try home remedies, over-the-counter treatments, and lifestyle changes. Learn tips for treatment and prevention. Heartburn is a burning sensation in your chest, behind your breastbone. It occurs when stomach acid travels back up your esophagus — the tube that carries food from your mouth to your stomach. In. Heartburn is a burning pain in the chest, just behind the breastbone. It's sometimes accompanied by a bitter or acidic taste in the mouth. The pain is often worse after eating, in the evening, or when lying down or bending over. Occasional heartburn is common and no cause for alarm. Heartburn is an irritation of your esophagus, the tube that connects your throat and stomach. This leads to a burning discomfort in your upper belly or chest. It's caused by acid reflux, which is. What is heartburn? Heartburn is a painful, burning feeling in the middle of your chest. It’s not really in your heart, though. It’s caused by stomach acid rising into your esophagus (reflux), which runs through your chest, close to your heart. People with heartburn commonly reach for antacids, over-the-counter medications that neutralize stomach acid. But eating certain foods may also offer relief from symptoms. Not sure if your heartburn is serious? Learn 5 clear signs it might need medical help and when to speak to your GP.