The most common symptoms of acid reflux are heartburn and regurgitation. Heartburn is a burning pain in the middle of your chest, behind your breastbone, that rises upward toward your throat. Regurgitation is the sensation of stomach contents traveling back up into your throat or mouth, often leaving a sour or acidic taste. But reflux causes a surprisingly wide range of symptoms beyond these two, and some people experience reflux without heartburn at all.
The Core Symptoms
Heartburn is the hallmark. It typically flares after eating, when lying down, or when bending over. The burning sensation can range from mildly uncomfortable to sharp enough to interrupt your day. Regurgitation often accompanies it, though the two don’t always appear together.
Other common symptoms include nausea, chest pain, and difficulty swallowing or pain when swallowing. If reflux happens often enough, it can leave your throat feeling raw or irritated, particularly in the morning.
Occasional reflux is normal. It crosses into gastroesophageal reflux disease (GERD) when symptoms occur two or more times a week, or when the esophagus shows signs of damage like narrowing or erosions.
Symptoms That Get Worse at Night
Reflux tends to intensify during sleep. When you’re lying flat, gravity no longer helps keep stomach acid where it belongs, and your body’s normal protective reflexes (like swallowing) slow down. This means acid sits in the esophagus longer and can reach the throat and airways more easily.
Nighttime reflux is strongly linked to poor sleep quality. You may wake up with a sore throat, a sour taste, or a cough you can’t explain. About 14% of the general U.S. population reports nighttime reflux symptoms, but among people with obstructive sleep apnea, that number jumps to 75%. The two conditions can feed into each other: reflux disrupts sleep, and disrupted sleep can worsen upper airway problems.
Silent Reflux: No Heartburn at All
Some people have acid reaching the throat and voice box without ever feeling heartburn. This is called laryngopharyngeal reflux, or “silent reflux,” and it’s more common than most people realize. More than half of people who see a doctor for chronic hoarseness turn out to have it.
The symptoms look very different from typical reflux:
- Hoarseness or a noticeable drop in your voice
- A lump-in-the-throat sensation, as if something is stuck
- Chronic throat clearing or cough
- Excessive mucus or phlegm
- Chronic sore throat
- Postnasal drip
- Wheezing or new or worsening asthma
Because these symptoms overlap with allergies, sinus problems, and respiratory infections, silent reflux often goes undiagnosed for months or years. If you’ve been treated repeatedly for throat or sinus issues without improvement, reflux is worth considering as a cause.
Chronic Cough and Respiratory Symptoms
GERD is one of the most common causes of unexplained chronic cough in adults, accounting for anywhere from 5% to 41% of cases in prospective studies. The cough happens through two pathways: acid irritates the upper airway directly when it reaches the throat, or tiny amounts get aspirated into the lungs.
What makes this tricky is that coughing itself can trigger more reflux episodes, creating a self-perpetuating cycle. You cough, which increases pressure on the stomach, which pushes more acid up, which makes you cough again. The cough is typically dry, persistent, and worse after meals or at night. It doesn’t respond to typical cold or allergy treatments.
Chest Pain That Mimics Heart Problems
Reflux-related chest pain can feel alarming. It may start after a large meal or a stressful event and last anywhere from a few seconds to several hours. The pain can be sharp or pressure-like, and it sometimes radiates in ways that feel cardiac.
There are key differences, though. Reflux chest pain is unlikely to cause sweating or shortness of breath, and it won’t improve with nitroglycerin (the medication used for heart-related chest pain). That said, chest pain always warrants taking seriously. If the pain is new, severe, or accompanied by sweating, shortness of breath, or pain radiating to your arm or jaw, treat it as a potential cardiac event first.
Effects on Your Teeth and Mouth
Repeated exposure to stomach acid takes a toll on dental enamel. The erosion pattern is distinctive: it primarily affects the inside surfaces of your teeth, the sides facing your tongue. This is because acid traveling up from the stomach contacts those surfaces first. Over time, you might notice increased tooth sensitivity, thinning or translucent-looking teeth, or a yellowed appearance as enamel wears away and exposes the layer beneath.
A dentist may actually be the first person to spot signs of chronic reflux, sometimes before you’ve connected your other symptoms to acid exposure.
When Symptoms Signal Something Serious
Most acid reflux is manageable and not dangerous. But certain symptoms suggest complications that need prompt evaluation: food getting stuck in your throat when you swallow, frequent vomiting, or losing weight without trying. These can point to esophageal narrowing, severe inflammation, or other structural changes.
One long-term concern with chronic GERD is Barrett’s esophagus, a condition where the lining of the lower esophagus changes in response to years of acid exposure. These cellular changes are considered precancerous in a small percentage of cases. Curiously, about half of people diagnosed with Barrett’s esophagus report little to no reflux symptoms. This means that having severe symptoms doesn’t necessarily predict complications, and having mild or no symptoms doesn’t guarantee you’re in the clear, particularly if you have other risk factors like a long history of reflux, male sex, or obesity.
Difficulty swallowing that develops gradually over time is one of the more important warning signs. It may start as a sensation that food is moving slowly, then progress to food getting stuck. This deserves evaluation regardless of whether you have typical heartburn alongside it.