saudigastro.com/patients/functional-heartburn
Category
Common
Red flags
4
This article is educational and does not replace your doctor's advice. Seek urgent care for any red-flag symptoms.
What is it?
Functional heartburn is a burning pain or discomfort behind the breastbone that feels like acid reflux, but where tests show that acid is not the cause. The gullet (oesophagus, the tube from the mouth to the stomach) looks normal, the amount of acid reaching it is not excessive, and the symptoms do not line up with acid episodes. It is a "functional" condition, meaning the gullet is overly sensitive to normal sensations. It is real, not imagined, and it is common.
How common is it?
Many people who are told they have reflux and do not improve on acid-reducing medicines turn out to have functional heartburn or another functional condition. It is more commonly diagnosed in people with persistent heartburn despite treatment.
Why does it happen?
The nerves in the gullet lining appear to be over-sensitive, so that normal stretching, small amounts of reflux or even normal sensations are felt as burning. Stress, anxiety, low mood and poor sleep can make this sensitivity worse, as the brain and gut are closely connected. It often overlaps with other functional gut conditions such as functional dyspepsia (upper abdominal discomfort) and irritable bowel syndrome.
Symptoms
- Burning discomfort behind the breastbone
- Symptoms that continue despite proper acid-reducing treatment
- No clear link between symptoms and food, position or reflux episodes
- Symptoms that are worse when stressed or tired
- Normal swallowing and normal weight
- Sometimes accompanied by bloating or upper belly discomfort
Red flags — seek urgent medical care
Chest pain with sweating, breathlessness, or pain spreading to the arm, jaw or back
This could be a heart attack. Call emergency services now; do not assume it is heartburn.
Difficulty or pain swallowing, or food sticking
Needs prompt endoscopy to look for narrowing or other disease.
Vomiting blood, black stools, or persistent vomiting
Signs of bleeding or obstruction. Go to the emergency department.
Unintended weight loss, anaemia or new symptoms after age 50
Needs investigation for a structural cause before accepting a functional diagnosis.
How is it diagnosed?
Doctors first confirm that a structural or acid-related disease is not the problem. An upper endoscopy (a thin camera passed through the mouth to look at the gullet and stomach) is usually normal. Then, usually after the person has stopped acid-reducing medicines for a time under medical advice, reflux monitoring is done: a thin probe or a small capsule measures how much acid reaches the gullet over one or more days and whether symptoms match the acid episodes. Sometimes a test of gullet movement (manometry) is also used to exclude muscle disorders such as achalasia. Functional heartburn is diagnosed when all of these are normal. Never stop your medicines before tests unless your doctor tells you to.
Outlook — what to expect
Functional heartburn is not dangerous and does not cause cancer. Symptoms can be long-lasting, but most people improve once the right kind of treatment is used, particularly treatments that target nerve sensitivity rather than acid.
Treatment
Habits & Lifestyle
Because the brain-gut connection matters, caring for stress and sleep is part of treatment.
- Try relaxation, slow breathing or mindfulness regularly
- Keep a regular sleep routine
- Be physically active most days
- Stop smoking; avoid excess alcohol
- Do not keep increasing acid medicines on your own if they are not helping; talk to your doctor
Diet
Food is rarely the main driver, but sensible eating can reduce flare-ups.
- Eat smaller meals and avoid lying down soon after eating
- Notice whether particular foods (very spicy, acidic or fatty) bother you and limit those
- Do not restrict your diet heavily; keep a balanced intake
Medications
Acid-reducing medicines often do not help functional heartburn, so treatment shifts to calming nerve sensitivity. Your doctor decides what to try.
- If proton pump inhibitors (stomach-acid blockers) have not helped, your doctor may advise reducing or stopping them gradually
- Low-dose medicines that reduce gut nerve sensitivity (certain antidepressant-type medicines) are often used; they are prescribed for pain modulation, not because the problem is "all in your mind"
- Other nerve-modulating medicines may be considered in specialist care
- Always take these medicines exactly as prescribed and report side effects
Procedures & Surgery
Procedures are mainly for testing. Anti-reflux surgery does not help functional heartburn.
- Endoscopy, reflux monitoring and manometry are used to make the diagnosis
- Anti-reflux surgery or endoscopic anti-reflux procedures are not recommended when reflux has been excluded as the cause
- Gut-focused psychological therapies, such as cognitive behavioural therapy or hypnotherapy, are effective for some people
Living with the condition
- Understanding that the discomfort is real, harmless and treatable can reduce its impact.
- See your doctor again if your symptoms change or red-flag symptoms appear.
In the Saudi context
If you fast during Ramadan, ask your doctor how to take your medicines safely around suhoor and iftar. Rich, fried or spicy iftar foods and strong tea or coffee can aggravate heartburn for some people.
Questions to ask your doctor
Save this list or print it before your appointment — doctors appreciate prepared patients.
- How do you know my heartburn is not caused by acid?
- Should I keep taking my acid-reducing medicine?
- Which treatment targets nerve sensitivity, and what are its side effects?
- Could psychological therapy help, and where can I find it?
Trusted resources
Was this guide helpful?
Status: Approved for publication by SGA; individual clinician review is ongoing · Published 24/04/2026
For general education only; it does not replace your doctor’s advice. Individual clinician review of this guide is ongoing. SGA clinician? Review this guide