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begins with a careful medical history. The history should focus on the timing of symptoms and on eliminating other medical conditions that may cause similar symptoms.

The actually diagnosis is usually made after a video-esophgram. Basically it involves the patient swallowing barium and video x-rays of the esophagus are taken. If the barium stays in the esophagus longer than normal, it's a sign of achalasia. Also the x-ray study would show if the esophagus is enlarged/dilated with a tapered narriowing at the lower end - which is also a sign of achalasia.

Sometimes another test - esophageal manometry - is used. For this test a thin tube is passed through the nose, down the back of the throat and into the esophagus all the way down o the lower esophageal sphincter (the muscle at the top of the stomach). This tube measures the pressure generated by the esophageal muscle - and this will be abnormal (there will be no peristalitic wave) if someone has achalasia. Also the lower esophageal sphincter will not relax as much.

An endoscopy can also be used when trying to diagnosis achalasia. The person is put under and a flexible fiberoptic tube with a camera is put own their throat. The camera provides direct visualization of the inside of the esophagus which is helpful (especially in ruling out esophageal cancer which may have symptoms similar to achalasia).

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14y ago

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