Acute pharyngitis changes from non-productive to productive cough.

In general, the development of phlegm in acute pharyngitis—from an initially dry throat to one producing mucus—may be due to irritation of the pharynx, inflammatory stimulation, bacterial infection, mucosal congestion, or allergic reactions. Targeted treatment under medical guidance is necessary. Specific causes are analyzed as follows:

1. Pharyngeal Irritation

Irritation of the pharyngeal mucosa may lead to increased secretions. Under medical guidance, patients can take medications such as watermelon frost lozenges, compound honeysuckle granules, or Yinhuang lozenges to alleviate symptoms.

2. Inflammatory Stimulation

In patients with acute pharyngitis, inflammation stimulating the throat area may result in increased secretions. Under medical supervision, medications such as amoxicillin capsules, roxithromycin capsules, or penicillin V potassium tablets may be taken to relieve symptoms.

3. Bacterial Infection

Bacterial infections in the body can also cause increased secretions. Under medical guidance, patients may take azithromycin capsules, minocycline hydrochloride capsules, or levofloxacin hydrochloride capsules to alleviate symptoms.

4. Mucosal Congestion

Proliferation of submucosal connective and lymphoid tissues, dilation of small blood vessels in the subepithelial layer, and increased vascular permeability can lead to increased exudation. Additionally, hypertrophy of mucous glands often results in excessive secretion, causing thick mucus to adhere to the posterior pharyngeal wall. Patients are advised to follow medical instructions and use medications such as omeprazole enteric-coated capsules, Lanqin oral liquid, or Qingyan Lihou tea for treatment.

5. Allergic Reaction

Increased inflammatory secretions may occur due to inhalation or contact with allergens, leading to the aforementioned phenomena. Patients should promptly remove themselves from exposure to the allergen to prevent more severe symptoms. It is recommended that patients follow medical advice and use medications such as loratadine tablets, cetirizine hydrochloride tablets, or calamine lotion for treatment.

If discomfort occurs, seek prompt medical attention for appropriate diagnosis and treatment to avoid delaying recovery.