Very few patients have allergic inflammation of the throat alone, and most of them have allergic rhinitis at the same time. In the case of simple allergic pharyngitis, the patient will have an unbearable itchy throat wall, repeatedly sticky phlegm attached to the throat wall that cannot be easily coughed up, and in severe cases, stinging at the corners of the eyes and stinging in the ear canal at the same time. If the patient also has allergic rhinitis, he or she usually has a combination of nasal congestion, runny nose, and sneezing. Patients usually need to be treated with oral anti-allergy medication, and in severe cases, they need to wear a mask with a high level of protection to avoid inhaling allergic particles and use hormone sprays if necessary.