Foreign body sensation in swallowing may be caused by reflux pharyngitis, esophageal cancer, hysteria and other diseases. 1. Reflux pharyngitis: inflammatory reaction caused by the reflux of stomach contents into the throat. Typical symptoms are acid reflux belching, retrosternal pain, foreign body sensation in swallowing and other symptoms. 2. Esophageal cancer: It is a cancer that occurs in the epithelium of the esophagus and is related to the consumption of too hot food and moldy food. The main symptoms are difficulty in swallowing when eating, foreign body sensation behind the sternum, pain behind the sternum and obvious weight loss in a short time. 3. Dysthymia: a psychological or mental disorder with multiple manifestations. Including phobias, anxiety disorders, hysterical ball disorder and other types, which hysterical ball disorder can be manifested as nervousness, rumination, foreign body sensation when doing swallowing. If there is a foreign body sensation when swallowing, do not be too nervous, you can first go to the hospital for examination to clarify the diagnosis.