Is yellow phlegm a sign of excessive internal heat or inflammation?
Oct 25, 2023
Source: Cainiu Health
Dr. He Haochen
Introduction
In general, yellow phlegm may be due to excessive internal heat or inflammation. If a patient has recently overexerted themselves, it may deplete the body's yin fluids, leading to hyperactivity of lung fire and resulting in an overheated condition in the lungs. When lung fire occurs, the normal dispersion and descending functions of lung qi become impaired and the lung's defensive system is compromised, possibly causing discomfort symptoms such as coughing, yellow and thick sputum, dry mouth, thirst, and sore throat.
Generally, yellow phlegm may be caused by excessive internal heat ("fire") or inflammation, and the exact cause should be determined based on individual circumstances. If accompanied by symptoms such as dry mouth and sore throat, it is likely due to internal heat; if associated with coughing and high fever, it may indicate inflammation. The specific analysis is as follows:
1. Internal Heat (Excess "Fire")
If a patient has recently experienced excessive fatigue, it may deplete the body's yin fluids, leading to hyperactivity of lung fire and resulting in an overheated condition in the lungs. When lung fire occurs, the normal function of lung qi—responsible for dispersion and downward regulation—is disrupted, and the lung's defensive system becomes compromised. This may lead to discomforts such as coughing, thick yellow phlegm, dry mouth, and sore throat. Under medical guidance, patients may use medications such as Huanglian Shangqing Tablets, Compound Honeysuckle Granules, or Tianwang Buxin Pills for treatment.
2. Inflammation
If proper protection is not taken and the lungs become infected with pathogenic microorganisms such as bacteria or viruses, an inflammatory response may occur, producing inflammatory secretions. This can result in symptoms including yellow phlegm, cough, and high fever. Some patients may also experience chest pain or weight loss. Under a doctor’s supervision, patients may take medications such as Ganciclovir Tablets, Cefixime Tablets, or Amoxicillin Granules, along with increasing fluid intake.
If yellow phlegm appears, prompt medical attention is recommended to avoid delayed diagnosis and potentially unpredictable complications.
