Dysphagia means difficulty with chewing or swallowing food or liquid. To understand how this might happen, it is important to know something about how swallowing occurs.
Swallowing disorders, also called dysphagia (dis-FAY-juh), can occur at different stages in the swallowing process:
- Oral phase – sucking, chewing, and moving food or liquid into the throat
- Pharyngeal phase – starting the swallowing reflex, squeezing food down the throat, and closing off the airway to prevent food or liquid from entering the airway (aspiration) or to prevent choking
- Esophageal phase – relaxing and tightening the openings at the top and bottom of the feeding tube in the throat (esophagus) and squeezing food through the esophagus into the stomach