Diagnosing Achalasia

How is it diagnosed?

If your GP thinks you have achalasia, you will be referred to hospital to have some diagnostic tests performed.

Barium swallow

A barium swallowinvolves drinking a white liquid containing the chemical barium, which allows the gullet to be seen and videoed on an X-ray.

In achalasia, the exit at the lower end of your gullet never opens properly, which causes a delay in barium passing into your stomach.

An ordinarychest X-ray may show a wide gullet.

Endoscopy

A flexible instrument called an endoscope is passed down your throat to allow the doctor to look directly at the lining of your gullet and stomach. Trapped food will be visible.

The endoscope can be passed through the tightmuscle at the bottom of your gullet and into your stomach to check there is no other disorder of the stomach.

A small plastic tube is passed into your gullet through your mouth or nose and the pressure at different points in your gullet is measured.

In achalasia, there are usually weak or absent contractions of the gullet and sustained high pressure in themuscle at the lower end of the gullet. The high pressure means themuscle does not relax in response to swallowing, causing symptoms of achalasia.

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Medically Reviewed by a doctor on 18 Jan 2018