What Causes a Sore Throat with Green Phlegm?
In general, both acute and chronic pharyngitis can cause sore throat. In either case—whether acute or chronic—the inflammation in the pharyngeal region stimulates nerve endings, resulting in throat pain. Chronic pharyngitis typically presents with a sensation of discomfort or mild pain in the throat, which intensifies during acute exacerbations.

What Causes Sore Throat Accompanied by Green Phlegm?
The most common causes include acute upper respiratory tract infections, acute pharyngitis, and acute tonsillitis. Acute epiglottitis may also be responsible, and in some cases, green phlegm with sore throat stems from pulmonary infection. Specific etiologies may vary among individuals.
After symptom onset, patients are advised to consult an otolaryngologist. A complete blood count (CBC) and indirect laryngoscopy are recommended to help determine the underlying cause and assess disease severity.
Regarding treatment: if the condition results from acute bacterial infection, antibiotics may be prescribed. If caused by a viral infection, antiviral therapy is indicated. Some patients may benefit from adjunctive nebulized therapy. Regular follow-up visits are essential during treatment to monitor therapeutic response.
Patients are advised to avoid spicy and irritating foods in daily life, drink adequate warm water, and refrain from excessive smoking or alcohol consumption—all of which support recovery.
We hope the above information is helpful to you.