Deglutition Disorders

**Definition:** Difficulty in SWALLOWING which may result from neuromuscular disorder or mechanical obstruction. Dysphagia is classified into two distinct types: oropharyngeal dysphagia due to malfunction of the PHARYNX and UPPER ESOPHAGEAL SPHINCTER; and esophageal dysphagia due to malfunction of the ESOPHAGUS.

**Tree numbers:** - C06.405.117.119 - C09.775.174

**Synonyms:** - Dysphagia - Swallowing Disorders