Esophageal Cancer Symptom
Dysphagia means difficulty swallowing. Odynophagia means painful swallowing. Sometimes it is not easy for individuals to distinguish between these two problems.
Dysphagia has many causes. First, there may be physical (anatomical) obstruction to the passage of food. Second, there may be abnormalities in the function (functional abnormalities) of the nerves of the brain, throat, and esophagus whose normal function is necessary to coordinate swallowing. Finally, there also may be abnormalities of the muscles of the throat and esophagus themselves.