Heartburn, acid reflux, and GERD are related, but they are not the same thing. Heartburn is a burning feeling in your chest. Acid reflux happens when stomach contents flow back into your esophagus. GERD is a medical condition in which reflux causes troublesome symptoms or complications.
The main difference is simple:
- Heartburn is a symptom: the burning feeling you may experience.
- Acid reflux is a process: stomach contents flowing back into the esophagus.
- GERD is a disease: reflux that causes troublesome symptoms or complications.
According to the National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK), occasional acid reflux is common. It does not always mean you have GERD.
Heartburn vs Acid Reflux vs GERD: At a Glance
| Term | What it means | Key difference |
|---|---|---|
| Heartburn | A burning feeling behind the breastbone that may reach the throat | A symptom, not a disease |
| Acid reflux (GER) | Stomach contents flow back into the esophagus | Can happen without causing disease |
| GERD | Reflux causes troublesome symptoms or complications | A medical condition that may need treatment |
For example, you might get heartburn after a large meal. That alone does not mean you have GERD.
But if reflux often wakes you at night or affects your daily life, talk to a doctor.
What Is Heartburn?
Heartburn is a burning feeling in your chest, usually behind the breastbone. The burning may spread toward your throat.
It often happens after eating or when you lie down.
Heartburn may also become more noticeable when you’re sick. Read our guide on whether a cold or the flu can cause heartburn to learn why reflux symptoms may appear during illness.
If you experience burning after vomiting during a stomach bug, learn more about heartburn after stomach flu.
Despite its name, heartburn usually comes from the esophagus, not the heart. However, heart problems can cause similar chest discomfort.
There are two things to remember:
- Acid reflux does not always cause heartburn. Some people mainly experience regurgitation. This happens when stomach contents come back up toward the throat or mouth.
- Chest burning is not always caused by reflux. Heart problems and other conditions can cause similar pain.
Never assume that new or unexplained chest pain is just heartburn.
What Is Acid Reflux?
Acid reflux is also called gastroesophageal reflux (GER). It happens when stomach contents flow backward into the esophagus.
The esophagus is the tube that carries food from your throat to your stomach.
A ring of muscle called the lower esophageal sphincter (LES) helps prevent reflux.
The LES opens when you swallow. This lets food enter your stomach. It then closes to help keep stomach contents from moving back up.
Reflux can happen when this muscle relaxes at the wrong time or fails to close well enough.
Although we call it acid reflux, the material that comes back up may contain more than acid. It can also include food and other digestive fluids.
If the material reaches your throat or mouth, you may notice a sour taste or feel food coming back up.
Is Occasional Acid Reflux Normal?
Yes. Occasional acid reflux is common, even in healthy people.
Sometimes reflux causes no symptoms at all. It may also happen without damaging the esophagus.
Having heartburn once in a while does not mean you have a long-term disease.
What matters is whether reflux causes troublesome symptoms, affects your daily life, or leads to complications.
What Is GERD?
GERD stands for gastroesophageal reflux disease.
It is a condition in which reflux causes troublesome symptoms or complications.
People often call GERD chronic acid reflux. This is a simple way to describe it, but it does not tell the whole story.
GERD is not just reflux that happens more than once. What matters is how it affects your health.
Common symptoms include:
- Heartburn that keeps coming back.
- Regurgitation of food or stomach contents.
- Symptoms that disturb sleep or daily activities.
Some people with GERD develop inflammation or damage in the esophagus. Others have symptoms without visible damage.
Does Heartburn Twice a Week Mean You Have GERD?
Not always.
Heartburn twice a week or more can be a sign of GERD. But frequency alone cannot confirm the diagnosis.
The American College of Gastroenterology (ACG) notes that frequent heartburn or regurgitation may suggest GERD.
A doctor will look at several factors:
- How often you have symptoms.
- How severe the symptoms are.
- Whether they affect sleep, meals, or daily life.
- Whether another condition could be causing them.
- Whether you have warning signs or complications.
Some people have troublesome reflux symptoms less than twice a week. Others have frequent chest burning for reasons unrelated to GERD.
A medical evaluation can help find the cause.
Learn more in our Acid Reflux Diagnosis and Symptoms guide.
Can You Have Acid Reflux or GERD Without Heartburn?
Yes. You can have acid reflux or GERD without feeling heartburn.
Some people mainly experience regurgitation. They may notice a sour taste or feel stomach contents coming back up.
Others may have symptoms such as:
- A long-lasting cough.
- A hoarse voice.
- A feeling of something stuck in the throat.
However, these symptoms do not always come from reflux.
A cough or hoarse voice can have many causes. Allergies, breathing problems, and throat conditions can cause similar symptoms.
These symptoms alone do not mean you have GERD.
If you have them without heartburn or regurgitation, your doctor may recommend tests before linking them to reflux.
Why Does the Difference Matter?
Understanding the difference helps you know when reflux may need medical attention.
Occasional reflux often causes no lasting harm. GERD, however, can lead to complications.
Possible complications include:
- Esophagitis: inflammation of the esophagus.
- Esophageal stricture: a narrowing of the esophagus caused by scar tissue. It can make swallowing difficult.
- Barrett’s esophagus: changes in the lining of the esophagus. This condition raises the risk of a type of cancer called esophageal adenocarcinoma.
These complications do not affect everyone with GERD.
Even if you have GERD, serious esophageal damage is not inevitable. Getting the right treatment can help control symptoms and reduce some risks.
When Should You See a Doctor?
Mild heartburn once in a while may not need medical tests.
However, speak with a doctor if:
- You have heartburn or regurgitation often, especially twice a week or more.
- Your symptoms continue or get worse despite self-care.
- Reflux often interrupts your sleep or daily life.
- You frequently need over-the-counter medicine to feel better.
Some symptoms need prompt medical attention.
These include:
- Trouble swallowing or feeling that food is stuck.
- Pain when swallowing.
- Weight loss without a clear reason.
- Persistent vomiting.
- Vomiting blood or material that looks like coffee grounds.
- Black, tarry stools, which may be a sign of bleeding.
Seek emergency medical care if you vomit blood or have black, tarry stools. The other warning signs also need prompt medical assessment.
These symptoms may have causes other than GERD. Do not assume acid reflux is responsible.
When Is Chest Pain an Emergency?
Never assume new, severe, or unexplained chest pain is acid reflux.
Chest pain can sometimes be a sign of a heart attack.
Seek emergency help for chest pain or pressure that could be heart-related, especially if it comes with:
- Shortness of breath.
- Cold sweats.
- Feeling faint.
- Nausea.
- Pain spreading to your arm, back, neck, or jaw.
A heart attack may also feel like indigestion or chest pressure that comes and goes.
You do not need to have every symptom listed above to be having a heart attack.
This guide explains when to seek emergency care.
Does Treatment Differ Between Occasional Reflux and GERD?
Yes. Treatment depends on how often symptoms occur, how severe they are, and whether complications are present.
Occasional heartburn may improve with changes to eating habits or by avoiding personal triggers. Short-term medication may also help relieve symptoms.
GERD may need a longer treatment plan. This can include lifestyle changes, medication, or further tests.
Doctors often use proton pump inhibitors (PPIs) to treat GERD. These medicines reduce stomach acid and can help heal acid-related damage in the esophagus.
However, not everyone with occasional heartburn needs regular medication. Treatment should match your symptoms and medical needs.
FAQ
No. Heartburn is a symptom that causes a burning feeling in your chest. GERD is a medical condition in which reflux causes troublesome symptoms or complications.
You can have heartburn without having GERD
No. Occasional acid reflux is common and may cause no symptoms or harm.
Reflux becomes a medical concern when it causes troublesome symptoms or complications.
Yes. Some people with GERD mainly experience regurgitation instead of heartburn.
Others may develop reflux-related complications without typical heartburn symptoms.
GERD often needs more medical attention because it can cause ongoing problems or complications.
However, having GERD does not mean you will develop serious damage to your esophagus.
Yes. Acid reflux can cause chest discomfort that feels similar to heart-related pain.
New or unexplained chest pain needs medical attention. Seek emergency help if you have signs of a possible heart attack.
The Bottom Line
Heartburn is a symptom. Acid reflux is the backward flow of stomach contents. GERD is a disease in which reflux causes troublesome symptoms or complications.
An occasional episode of reflux does not mean you have GERD. Frequent heartburn alone also cannot confirm the diagnosis.
If symptoms keep coming back, affect your daily life, or fail to improve with self-care, speak with a doctor.
Seek prompt medical care if you develop warning signs such as trouble swallowing or unexplained weight loss. Possible heart attack symptoms require emergency care.