Cricopharyngeal Spasm

Cricopharyngeal Spasm: A Troubling Feeling of a Lump in the Throat
Cricopharyngeal spasm is caused by over-contraction of the upper esophageal sphincter, or cricopharyngeus muscle, and causes an annoying, preoccupying, even anxiety-provoking sensation of something stuck in the throat, like a “wad of phlegm.” A common description is “There is something in my throat that I can’t swallow or spit out.”

See also: cricopharyngeal spasm in the encyclopedia.