Hiatal hernia: when part of the stomach slides up
A frequent explanation for stubborn reflux
Dr. Marc Delaunay
Gastroenterologist

In simple terms
How the diaphragm opening enlarges, why symptoms overlap with reflux, and when surgery is justified.
What it is, in plain words
The oesophagus passes through an opening in the diaphragm before joining the stomach. In a hiatal hernia that opening widens and the upper stomach slides into the chest. The anti-reflux mechanism weakens, so acid escapes upward more easily. Small hernias are extremely common and often silent.
Signs to look out for
- Heartburn and acid regurgitation, worse lying down or bending over
- Chest discomfort that can mimic heart pain
- Difficulty swallowing or a feeling of food sticking
- Belching, bloating and early fullness
- Chronic cough, hoarseness or worsening asthma from acid reaching the throat
Why it happens
Age-related weakening of tissue, obesity, pregnancy, chronic cough, heavy lifting and constipation with straining all contribute. There is also an inherited tendency.
How doctors confirm it
Upper endoscopy shows the hernia and any inflammation of the oesophagus. A barium swallow demonstrates the anatomy, and pH and manometry studies are used before considering surgery.
Treatments and solutions
- Weight loss, which reduces pressure on the abdomen and is the most effective lifestyle change
- Smaller meals, avoiding lying down for three hours after eating, and raising the head of the bed by 15 cm
- Reducing alcohol, tobacco, coffee, chocolate, fatty meals and mint if they trigger symptoms
- Proton pump inhibitors to heal the oesophagus, at the lowest dose that controls symptoms
- Laparoscopic repair with fundoplication for large hernias, failed medical treatment, or a paraoesophageal hernia at risk of strangulation
Living with it day to day
Track your own triggers with a simple diary; the offending foods differ from person to person, and blanket restriction lists are rarely necessary.
When to seek medical help
Seek urgent care for sudden chest or upper abdominal pain with vomiting and inability to swallow, which can indicate a trapped hernia.
This article explains general health information in simple language. It does not replace advice from your own doctor.
The words explained
Medical terms used above, in everyday language.
- Chronic
- A problem that lasts a long time, usually more than three months, and often comes back.
- Inflammation
- The body's reaction to injury or irritation: redness, swelling, heat or pain.
- Symptom
- A sign you can feel or see that something is wrong, like pain, tiredness or a rash.
When should you see a doctor?
- Your symptoms last more than a few weeks or keep coming back.
- They get worse quickly, or stop you doing everyday things.
- You notice sudden pain, breathing trouble, fainting or bleeding — seek urgent care.
- You already take medication and want to change anything about it.
This article explains general health information. It does not replace advice from your own doctor.
Frequently asked questions
- What is Hiatal hernia: when part of the stomach slides up?
- How the diaphragm opening enlarges, why symptoms overlap with reflux, and when surgery is justified.
- What are the main symptoms or signs of Hiatal hernia: when part of the stomach slides up?
- Common signs vary from person to person. The article above lists the symptoms to watch for, how they progress, and when they need medical attention.
- When should you see a doctor for Hiatal hernia: when part of the stomach slides up?
- See a doctor if symptoms last more than a few weeks, get worse quickly, stop you doing everyday things, or if you notice sudden pain, breathing trouble, fainting or bleeding.
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