The hallmark symptom of heartburn is a burning sensation in the middle of your chest, behind your breastbone, that rises upward toward your throat. It usually strikes after eating and can worsen at night or when you lie down. But heartburn involves more than just chest pain. It can show up as a sour taste in your mouth, a persistent cough, or even a feeling that food is stuck in your throat.
The Core Symptoms
That burning feeling in the chest is what most people recognize as heartburn. It starts near the lower tip of your breastbone and travels upward, sometimes reaching the back of your throat. The sensation ranges from mildly uncomfortable to sharp enough to wake you from sleep. Eating, lying down, or bending over typically makes it worse.
Alongside the burn, many people experience regurgitation: a backwash of sour or bitter liquid into the throat, sometimes bringing partially digested food with it. This acid taste tends to linger and can leave your throat feeling raw. Upper belly pain and general chest discomfort round out the most common complaints.
What Causes the Burning
Your esophagus connects your throat to your stomach, and at the bottom sits a ring of muscle that opens to let food through, then closes to keep stomach acid where it belongs. Heartburn happens when that muscle relaxes at the wrong time or doesn’t close tightly enough, allowing acid to splash upward into the esophagus. Two patterns drive this: the muscle relaxes too frequently on its own, or its resting tension is too weak to hold acid back. The problem is primarily one of nerve signaling to the muscle rather than the muscle itself being damaged.
A hiatal hernia, where part of the stomach pushes up through the diaphragm, can make the problem worse by further weakening that muscular seal.
Symptoms You Might Not Expect
Acid doesn’t always stop at the esophagus. When it reaches the throat and voice box, it can trigger a range of symptoms that don’t feel like “heartburn” at all. These include hoarseness or a lower-than-usual voice, a chronic sore throat, constant throat clearing, excessive mucus, and a nagging cough that won’t go away. Some people develop new or worsening asthma, wheezing, or frequent upper respiratory infections. Postnasal drip that doesn’t respond to allergy treatment is another clue.
One of the more unsettling symptoms is the sensation of a lump stuck in your throat, even when nothing is there. This feeling can come and go and often gets worse with stress or after meals.
When Swallowing Becomes Difficult
If heartburn goes on long enough, repeated acid exposure can scar and narrow the esophagus. When that happens, food may feel like it’s catching or getting stuck in your chest after you swallow. Solid foods, especially bread or meat, tend to cause the most trouble. You might also notice yourself eating more slowly, cutting food into smaller pieces, or avoiding certain textures without quite realizing why.
Difficulty swallowing isn’t a typical early symptom. It usually develops after months or years of acid exposure and signals that the esophagus has been damaged enough to form scar tissue or a narrowed ring in its lower portion.
Nighttime Symptoms
Heartburn often behaves differently at night. When you’re lying flat, gravity can no longer help keep acid in your stomach, and you swallow less frequently during sleep, which means acid sits in the esophagus longer. The result is more intense burning, a chronic cough that disrupts sleep, and a hoarse voice in the morning.
Avoiding food for at least three to four hours before bed helps reduce nighttime episodes. Sleeping on your left side or elevating the head of your bed also limits how much acid can travel upward.
Heartburn During Pregnancy
Somewhere between 30% and 80% of pregnant women experience heartburn, making it one of the most common discomforts of pregnancy. Progesterone, a hormone that rises sharply during pregnancy, relaxes the muscular seal between the stomach and esophagus. At the same time, digestion slows down overall, so food sits in the stomach longer and the chance of acid splashing upward increases. As the uterus grows, added pressure on the stomach pushes things further in the wrong direction.
The symptoms are the same as non-pregnancy heartburn (burning, regurgitation, bloating), but they can feel more persistent because the hormonal and physical triggers don’t let up until delivery.
Heartburn vs. Heart Attack
Chest pain always raises the question of whether it’s heartburn or something more serious. The two feel different in important ways. Heartburn produces a burning sensation in the chest and upper abdomen that typically starts after eating, lying down, or bending over. A heart attack causes pressure, tightness, or a squeezing ache in the chest or arms that may spread to the neck, jaw, or back, often brought on by physical exertion.
Heartburn doesn’t radiate to your arms or jaw. It doesn’t cause shortness of breath, cold sweats, or lightheadedness. If your chest pain comes with any of those symptoms, or if it feels like heavy pressure rather than burning, treat it as a cardiac emergency. The overlap between the two is real enough that even emergency physicians run tests to rule out heart problems before diagnosing reflux.
Common Triggers
Certain foods and habits make heartburn more likely. Spicy, fatty, or acidic foods (tomatoes, citrus, coffee, chocolate) are frequent offenders, along with alcohol and carbonated drinks. Large meals stretch the stomach and put more pressure on the lower esophageal muscle. Eating too close to bedtime, wearing tight clothing around the waist, smoking, and excess body weight all increase the odds of symptoms flaring.
Tracking which triggers affect you specifically is more useful than avoiding everything on a generic list. Many people find they tolerate some “classic” triggers just fine while reacting strongly to others that aren’t on any standard list.