Foreign body sensation in the nasopharynx may be caused by sinusitis, nasopharyngitis, adenoid hypertrophy and so on. 1. Sinusitis: This disease can have mucopurulent secretions flowing into the throat through the nasopharynx, leading to the phenomenon of foreign body sensation in the nasopharynx. 2. Nasopharyngitis: foreign body sensation in nasopharynx may be caused by acute or chronic inflammation, due to excessive secretion of nasopharyngeal glands, mucus irritation leads to discomfort in the throat, including: foreign body sensation, itchy sensation and so on. 3. Adenoid hypertrophy: adenoids are located in the nasopharynx, hypertrophied adenoids and viscous secretions block the nostrils, secretions in the nasal cavity is not easy to flow out, there will be a foreign body sensation in the nasopharynx. When patients have a foreign body sensation in the nasopharynx, it is recommended to consult a doctor in time to clarify the cause of the disease and then reasonably treat it.