Pharyngitis in usual care primarily involves identifying the causes of pharyngitis and preventing these triggers for gradual improvement and to avoid recurrent attacks. Common causes observed clinically include: First, congestion in the throat caused by changes in weather, smog, and smoke irritation. Second, symptoms in the throat caused by repeated acute inflammatory irritations, such as acute pharyngitis, acute tonsillitis, acute rhinitis, and sinusitis. Recurrent irritation by purulent secretions can lead to congestion and edema of the mucous membrane in the throat area. Third, long-term intake of spicy food leading to disturbances and disorders in the digestive system, commonly seen in stomach cancer, gastritis, gastric ulcers, and duodenal ulcers. Repeated irritation by acidic reflux and gases can also cause symptoms in the throat area. Therefore, in treatment, patients should first eliminate these triggers for gradual improvement and healing.