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<http://schema.org/description>
"Other signs include pain or pressure in the chest, neck, or back when swallowing or coughing; persistent heartburn; weight loss; changes in taste or smell; and trouble breathing. A doctor can diagnose an esophageal blockage by performing a physical examination and testing your blood pressure during swallowing exercises to see how much it drops. There are two types of esophageal blocks: mechanical and chemical."
<https://staminacomfort.com/how-do-you-know-if-you-damage-your-esophagus>