An evaluation for achalasia begins with a history and physical examination.

Physical findings in someone with achalasia is usually normal.

Tests are required to confirm the diagnosis of achalasia.

Tests that may be used to evaluate achalasia include:

• Barium swallow
• Chest x-ray
• Esophageal manometry:
• Measuring the pressure inside the esophagus
• Esophagoscopy
• Upper GI endoscopy