What is the definition or description of: difficulty swallowing?

Difficulty swallowin: Difficulty swallowing is complex. One could have decreased saliva which will make the food thick and viscous and harder to swallow. Food or liquids may be difficult to swallow and feel like they are getting "stuck" in the throat. One may also "choke" on liquids or foods during the swallow, before , or after the swallow depending on the problem with the swallowing mechanism.