Pharyngeal anisometropia refers to a variety of abnormal sensations in the pharynx other than pain or a tight chasing or girdling sensation in the neck. Pharyngeal allodynia is not a disease, but a symptom. Currently, pharyngeal allodynia refers to a variety of abnormal pharyngeal sensations or phantom sensations (except pain), such as a sense of swallowing obstruction, ball gagging, or sticking sensation without dysphagia. The location is fixed or not fixed. Some patients often feel a tightening sensation in the neck, such as girdle-like, feel that the collar can not be fastened, breathing is not fluent, but did not show signs of dyspnea, the patient is mostly middle-aged women, this situation can also be called pharyngeal anisocoria. Patients with these symptoms should go to the hospital in time to find out the cause and standardize the treatment under the guidance of the doctor.