Foreign body sensation when swallowing pain is commonly caused by acute pharyngitis, chronic pharyngitis, acute tonsillitis and so on. 1. Acute pharyngitis: viral and bacterial infections can cause acute inflammatory reaction of the throat, pain in swallowing, foreign body sensation in swallowing and other discomforts. 2. Chronic pharyngitis: Acute pharyngitis is a recurring disease with symptoms such as dry cough, sore throat, and foreign body sensation in the throat. 3. Acute tonsillitis: can be caused by viral or bacterial infections, often occurring tonsil redness and swelling, resulting in symptoms such as sore throat, pain aggravated by swallowing, swallowing can be a foreign body sensation and a sense of obstruction. The appearance of this symptom may also be caused by pharyngeal tumors, ulcers and other diseases, and should actively seek medical attention to find out the cause and make a clear diagnosis.