👉 Dysphagia, also known as dysphagia, is a condition where a person has difficulty swallowing food or liquid. It can be caused by various factors such as a disorder of the esophagus, which is part of the digestive system; an abnormality in the muscles that control swallowing; or a neurological condition called brainstem dysfunction. Dysphagia affects millions of people worldwide and can lead to serious health problems if left untreated.