A red spot in the throat may be chronic hypertrophic pharyngitis, retropharyngeal abscess, pharyngeal ulcers and so on. 1. Chronic hypertrophic pharyngitis: chronic hypertrophic pharyngitis is mainly caused by recurrent episodes of acute pharyngitis, but also may be related to excessive smoking and alcohol, a large number of spicy and stimulating food, the patient due to the posterior wall of the pharyngeal lymphoid follicle hyperplasia will lead to a red spot in the throat, but also may be accompanied by pharyngeal burning sensation, a foreign body sensation and other symptoms. 2. Retropharyngeal abscess: Retropharyngeal abscess may be caused by the inflammation of retropharyngeal lymph nodes, pharyngeal foreign body, pharyngeal trauma and other factors, the patient will appear in the posterior wall of the pharynx bulge, mucosal congestion phenomenon, which makes the throat appear red spots, and may be accompanied by chills, high fever, pharyngeal obstruction and other symptoms. 3. pharyngeal ulcers: oral ulcers are superficial ruptures of the oral mucosa, which can also occur in the pharynx, ranging from the size of a grain of rice to the size of a soybean, with varying depths, which can be manifested in the throat as a red spot, and can also be painful. Patients with a red spot in the throat are advised to seek medical attention in the hospital, and standardized treatment is carried out after the diagnosis is clear.