What is inflammation of the left maxillary sinus?

Generally, inflammation of the left maxillary sinus is an infectious inflammation of the mucous membrane in the left maxillary sinus and is a common type of sinusitis, often triggered by nasal conditions. Timely intervention can effectively control the condition. The detailed analysis is as follows:

The maxillary sinuses are air-filled cavities within the skull bones surrounding the nasal cavity. Inflammation of the left maxillary sinus involves congestion, swelling of the mucous membrane, and increased secretion within the left sinus cavity. The condition is commonly associated with nasal diseases such as rhinitis or nasal polyps that block the sinus openings; it may also be triggered by colds, allergies, or structural abnormalities in the nasal cavity. Patients often experience nasal obstruction on the left side, with thick yellow nasal discharge, and may feel pressure or pain in the left face, forehead, or teeth—pain typically worsens when bending over or lowering the head. Some individuals may also have reduced sense of smell. Diagnosis can be confirmed via nasal endoscopy or sinus CT scan. Acute inflammation requires antibiotics to control infection, along with intranasal corticosteroids to open blocked sinus passages. Chronic cases may benefit from nasal irrigation as adjunctive therapy.

In daily life, it's important to stay warm and avoid catching colds. Individuals with allergies should avoid allergens. When blowing the nose, press one nostril closed and blow gently—avoid excessive force, which can increase nasal pressure and raise the risk of recurrent inflammation.