Chronic pharyngitis is classified into several types.
Chronic pharyngitis, based on pathological conditions, is divided into three types. The first type is chronic simple pharyngitis, which is also the most common type we usually refer to. It mainly involves chronic congestion of the pharyngeal mucosa and hyperplasia of lymphatic follicles on the posterior pharyngeal wall. The second type is chronic hypertrophic pharyngitis, which can be observed during examination as congested and thickened pharyngeal mucosa with proliferating lymphatic tissue, appearing rather thick. The third type is atrophic and dry pharyngitis, which is relatively rare in clinical cases and often accompanies atrophic rhinitis. A primary symptom is dryness in the throat because the pathological changes mainly involve a decrease in the secretory function of the glandular tissues in the pharynx, resulting in reduced secretions and the mucosa becoming atrophic and thin. Based on the different causes of the condition, it can also be divided into several types. One type is simple pharyngitis, also referred to as chronic simple pharyngitis, related to smoking, drinking, air pollution, and excessive talking. Another type is reflux pharyngitis, which is now also a disease with a relatively high incidence rate, mainly caused by gastroesophageal reflux leading to chronic inflammation of the stomach and damage to the mucous membrane of the pharynx and throat, known as reflux pharyngitis. Additionally, some cases are secondary to rhinitis and sinusitis, due to the long-term discomfort in the throat caused by the backflow of nasal discharge, leading to chronic inflammatory responses; this is also a type of secondary pharyngitis.