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5. What Brown Phlegm Means

Brown phlegm may be a cause for concern as it is that color because of old blood. It is often rusty in appearance. Often you see brown phlegm after seeing red or pink phlegm. The common causes of brown phlegm are:

  • Bacterial bronchitis
  • Bacterial pneumonia
  • Lung abscess
  • Pneumoconiosis (inhaling dust or other particles)
  • Cystic Fibrosis

 

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Disclaimer

This site offers information designed for educational purposes only. You should not rely on any information on this site as a substitute for professional medical advice, diagnosis, treatment, or as a substitute for, professional counseling care, advice, diagnosis, or treatment. If you have any concerns or questions about your health, you should always consult with a physician or other healthcare professional.