The Donguibogam concept of phlegm-fluid offers insightful parallels to modern medical understandings of reflux esophagitis, laryngopharyngeal reflux, functional dyspepsia, and globus sensation. Rather than being a simple matter of gastric hyperacidity, it reflects an interplay among the nervous system, hormones, and inflammatory responses.
A primary cause of reflux esophagitis is dysfunction of the lower esophageal sphincter (LES). When this sphincter weakens or relaxes inappropriately, stomach contents and gastric acid flow back into the esophagus. The autonomic nervous system, including the vagus nerve, plays an essential role in regulating this muscle. What Donguibogam describes as an obstruction in the flow of qi aligns closely with an autonomic nervous system imbalance. Under prolonged stress, sympathetic nerve activity rises, suppressing gastrointestinal motility, hindering digestive enzyme secretion, and eventually impairing the lower esophageal sphincter. This mirrors the way phlegm-fluid forms when natural fluid pathways become blocked.
The sensation of a plum pit caught in the throat, known as plum-pit qi, is recognized in modern medicine as globus sensation. Rather than an actual physical obstruction, it often stems from increased tension in the esophageal muscles, irritation in the pharynx, or a hypersensitivity reaction to gastroesophageal reflux. Psychological factors like stress and anxiety contribute significantly, reflecting disturbances along the gut-brain axis. Because the brain and gut communicate continuously through neurotransmitters and hormones, stress can disrupt this pathway, leaving the esophagus hypersensitive to even mild stimuli. This resembles the classical idea of phlegm-fire agitating the body.
Furthermore, chronic acid reflux induces chronic inflammation in the esophageal mucosa, heightening the sensitivity of nociceptors and intensifying heartburn and the foreign body sensation in throat. The classical description of congealed phlegm-fire captures this inflammatory cascade quite clearly. When the immune system reacts excessively and inflammatory mediators build up, it can feel as though hot, viscous waste is accumulating within the tissues.
Phlegm-fluid is therefore not an isolated disease pattern, but a comprehensive concept addressing digestive hypofunction, autonomic nervous system imbalance, gut-brain axis disruption, and chronic inflammation. This is why recurring discomforts that do not resolve with an antacid alone can often be understood more deeply through the perspective of Donguibogam. Restoring systemic balance remains the most important step in addressing phlegm-fluid.
