The feeling of a foreign body inside the throat may be caused by reflux pharyngitis, chronic pharyngitis, epiglottis cyst and other diseases. 1. Reflux pharyngitis: gastric contents reflux to the throat, stimulate the mucous membrane of the throat red and swollen, there may be a foreign body sensation in the throat. 2. Chronic pharyngitis: If the mucous membrane of the pharynx is inflamed, it can lead to edema, hyperplasia and hypertrophy of the mucous membrane of the pharynx, which makes you feel that there is a foreign body in your throat when you swallow. 3. Epiglottis cyst: Epiglottis cyst is caused by the blockage of the glandular ducts in the epiglottis area, which leads to the retention of mucus and the formation of cysts. Patients may experience a foreign body sensation or a feeling of obstruction in the throat, and in severe cases, they may also experience difficulty in breathing. There are many other causes of foreign body sensation in the throat, and it is recommended that patients go to the hospital in time to find out the cause and follow the doctor’s instructions for targeted treatment.