Hiatus hernia: Questions and Answers

Written and reviewed by Dr Ali Zad, FRACP gastroenterologist, Brisbane. Last reviewed November 2026 against current Australian and international guidelines. General information only, not a substitute for personal medical advice.

Infographic by Dr Ali Zad: normal anatomy of the oesophagus, lower oesophageal sphincter and stomach; acid reflux (GORD) when the sphincter relaxes and acid flows back into the oesophagus; and a sliding hiatus hernia where part of the stomach moves above the diaphragm
How a sliding hiatus hernia weakens the anti-reflux barrier (panel 3). Tap to enlarge.

What is a hiatus hernia?

A hiatus hernia occurs when part of the stomach pushes up through the diaphragm into the chest. Small hiatus hernias are common and often cause no symptoms, but they can make reflux worse.

Diagram of acid reflux (GORD) and a hiatus hernia

Does a hiatus hernia need surgery?

Most do not. Symptoms are usually managed with lifestyle changes and reflux medicines. Surgery may be considered for large hernias, persistent reflux despite treatment, or complications, after appropriate testing.

Related procedures and information

Book an appointment

If you have symptoms of hiatus hernia, see your GP or book a consultation with gastroenterologist Dr Ali Zad on (07) 2111 2600 or request an appointment online. You can book directly; a GP referral is needed for a Medicare rebate.

See Dr Zad near you

Dr Ali Zad consults and performs gastroscopy and colonoscopy at seven hospitals:

Book on (07) 2111 2600 or request an appointment online.

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