Dysphagia

**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 oesophageal sphincter; and oesophageal dysphagia due to malfunction of the oesophagus.

**Inclusions:** - Difficulty in swallowing

**Exclusions:** - Functional swallowing disorder