This is a type of specific phobia that involves an intense fear of swallowing. People with phagophobia may experience extreme anxiety and panic when faced with the prospect of having to swallow food, liquids, or pills. Symptoms can include shortness of breath, rapid heartbeat, nausea, and trembling
From Wikipedia
Phagophobia is a psychogenic dysphagia, a fear of swallowing. It is expressed in various swallowing complaints without any apparent physical reason detectable by physical inspection and laboratory analyses. An obsolete term for this condition is choking phobia, but it was suggested that the latter term is confusing and it is necessary to distinguish the fear of swallowing from fear of choking.