2025-12-05 寫HAPE與肺炎的區分查詢的資料
What can sputum (phlegm) tell us?
The different colors of sputum can indicate whether a person has a health problem and what kind of problem they may have. Here are some of the colors that may be present.
| Color | Reason |
| clear, white, or gray | usually indicates healthy lungs, but a lot of sputum may indicate a lung disease, allergy, or viral infection |
| dark yellow or green | can indicate a bacterial or viral infection, such as pneumonia, or cystic fibrosis, an inherited condition that involves excess mucus buildup |
| brown | often occurs in people who smoke and those with black lung disease, a condition resulting from exposure to coal dust |
| pink | can indicate pulmonary edema (fluid on the lungs), from a condition such as congestive heart failure |
| red | can be a sign of an internal injury, lung cancer, or a pulmonary embolism (PE), which is a blood clot on the lung that needs immediate medical attention |
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