The insights of the Donguibogam align closely with modern medical understanding. Sinusitis, particularly chronic sinusitis, is an inflammation of the paranasal sinuses—the air-filled cavities surrounding the nose—that causes mucus to pool and the mucosal lining to swell. Far from simply causing a runny or blocked nose, it produces interrelated effects throughout the body.
First, yellow nasal discharge and nasal congestion result from inflammation of the paranasal sinus mucosa. Bacterial or viral infections and allergic reactions induce edema in the sinus mucosa, prompting the mucous glands to become hyperactive and produce excessive mucus. This fluid thickens, and in the presence of a bacterial infection, it turns yellow. A healthy paranasal sinus uses ciliary movement to clear mucus into the nasal cavity. When inflammation impairs ciliary function, drainage is compromised, allowing mucus to accumulate inside the sinuses, which leads directly to congestion and increased pressure.
Headache is another characteristic symptom of sinusitis. As the swollen mucosa increases pressure within the paranasal sinuses, it irritates nearby nerves, particularly the supraorbital branch of trigeminal nerve and the maxillary nerve. This typically produces a throbbing sensation across the forehead, glabella, eye area, and zygomatic bone, which often worsens when bending forward or applying pressure. Chronic inflammation also sensitizes the nervous system, lowering the pain threshold. While severe cases carry a risk of inflammation extending toward the meninges, the discomfort usually stems from elevated sinus pressure and inflammatory mediators such as cytokines.
Postnasal drip is another common and troublesome complaint. Because inflammation thickens the mucus and increases its volume, the fluid cannot exit easily through the front of the nose and instead runs down the back of the throat. This continuously irritates the laryngopharyngeal mucosa, leading to chronic cough, foreign body sensation in throat, hoarseness, and sore throat. When postnasal drip enters the esophagus, it can cause digestive system discomfort or heartburn, and if aspirated into the bronchus, it can aggravate bronchitis. At night, lying flat causes mucus to drain backward more readily, impairing sleep quality and worsening snoring or sleep apnea.
In this way, sinusitis is more than an ordinary cold; it influences systemic health across the respiratory system, nervous system, and digestive system. If left unaddressed, it can diminish quality of life through persistent fatigue, impaired concentration, and lethargy. Paying attention to these early physical signals is an important step in protecting overall health.
