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Doctor insights on: Coughing Up Dark Green Mucous

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Dr. Aaron Milstone
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Mucus (Definition)

Like material that functions to moisten and protect inner body surfaces. The viscous slippery substance that consists chiefly of mucin, water, cells, and inorganic salts and that is secreted as a protective lubricant coating by the cells and glands of the mucous membranes. The free slime of the mucous membranes, composed of secretion of the glands, various salts, ...Read more


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Nasal cold w/ low fevers now in chest. Green mucous in cough, feeling of low O2 w/ breath.Dark pink and white nails.Bubbling deep in breath.Any ideas?

Nasal cold w/ low fevers now in chest. Green mucous in cough, feeling of low O2 w/ breath.Dark pink and white nails.Bubbling deep in breath.Any ideas?

Bronchitis: An infection like Sinusitis, Bronchitis or Pneumonia could cause your symptoms. Please get evaluated by your doctor if you feel your oxygen is low. In fact this finding is grounds for getting checked at an Urgent Care/Emergency Room ...Read more

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Dr. Aaron Milstone
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Why do I cough up dark green almost black mucus?

Why do I cough up dark green almost black mucus?

Cough: It depends where the mucous is coming from. It can be from the lungs or sinuses. See your doctor to be evaluated. ...Read more

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I've had a cold for about 5 days with as cough & mucus. In the morning the mucus is dark green & the cough is NT getting any better. Should I go in?

I've had a cold for about 5 days with as cough & mucus. In the morning the mucus is dark green & the cough is NT getting any better. Should I go in?

Cough + cold symptom: It would be difficult to determine what is causing this without being seen. Green mucus can occur in the morning naturally as a cold is resolving and does not necessarily mean there is an infection. If you have a fever or the symptoms last longer then 10 days then you should see your doctor. You can try saline nasal spray and mucinex to loosen the secretions if there is no fever. ...Read more

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Dr. Aaron Milstone
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Have had a bad cough bronchitis for 3 months. E smoker stopped 5 years ago wheezing and shortness of breath. Have bad mucus dark green for 3 months?

Have had a bad cough bronchitis for 3 months. E smoker stopped 5 years ago wheezing and shortness of breath. Have bad mucus dark green for 3 months?

Get treated: You need to get checked out and treated. Whether your problem is copd, asthma, bronchiectasis, or something else, the longer the illness goes on in a poorly-controlled state, the worse it will be for your long-term health. This applies to your entire body, including your heart, not just your lungs. ...Read more

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My chest and back hurts when i cough due to chest congestion . Does this warrant a chest X-ray to rule out pneumonia . Dark green mucus.?

My  chest and back hurts  when  i  cough due to chest congestion .  Does this warrant a chest X-ray  to rule out pneumonia .  Dark green mucus.?

Maybe: It warrants an evaluation by a physician as these symptoms are consistent with pneumonia but not specific to it. Whether a chest xray is needed depends on additional info, other symptoms, fever, physical exam findings etc. ...Read more

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Sore throat for 3 days. Dark green mucus. Hurts the right side of my chest when i cough. Stuffy then runny nose. Do you know what could cause this?

Sore throat for 3 days. Dark green mucus. Hurts the right side of my chest when i cough. Stuffy then runny nose. Do you know what could cause this?

Seasonal flu: It is very common viral infection. Usually the condition resolves on its own with home care. Drink water and get a good rest. If there is no improvement or sore throat is severe or lasts longer than another week, or you are getting joint pain; see your pcp for evaluation. ...Read more

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When I cough, I cough up mucous that is dark almost black. What does this mean?

Check Environment : Most common cause of gray or black mucus is dirt and dust smoking marijuana can also cause black mucus or phlegm. Coal miners, can have black mucus. Exposure to beryllium may give black mucus chronic sinusitis and pneumonia associated with mucormycosis and aspergillosis infections ( fungal). ...Read more

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Im a severe asthmatic and I have a terrible cough and coughing up thick green mucous?

Im a severe asthmatic and I have a terrible cough and coughing up thick green mucous?

See below: Depending on other factors not mentioned in you note like duration of symptoms, severity of symptoms, breathing difficulty, fevers, and other systemic signs, you may need to see you physician. If any breathing difficulty at all acutely, seek medical attention immediately. ...Read more

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Dr. Sue Ferranti
3,200 doctors shared insights

Cough (Definition)

Coughing is an important way to keep your throat and airways clear. However, excessive coughing may mean you have an underlying disease or disorder. Some coughs are dry, while others are considered productive. A productive cough is one ...Read more


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Dr. Aaron Milstone
Board Certified, Pulmonology
21 years in practice
1M people helped
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