Green Phlegm with Red Specks: What Could It Mean? - Otolaryngology

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Green phlegm with red streaks?


Hello, doctor.
Recently, I seem to have a slight cold, but I don't have many symptoms.
For the past two or three days, I've occasionally coughed up green phlegm and yellow-green nasal mucus.
However, I just coughed up some green phlegm that had a small red speck in it, about 0.1 centimeters.
It's really small, and I'm not sure if it's blood or something else.
I haven't eaten anything this morning, so it shouldn't be food residue.
I would like to hear your opinion.
If it is blood, what could it possibly be? Should I just monitor it, or should I get it checked? I don't smoke or chew betel nut, and I usually don't cough.
Thank you.

Xiao Zhe, 30~39 year old female. Ask Date: 2024/02/17

Dr. Zheng Jueyi reply Otolaryngology


Hello, the presence of green phlegm and yellow-green nasal discharge is commonly associated with bacterial infections.
If you continue to cough or have yellow pus-like nasal discharge, it is advisable to see an otolaryngologist for examination and treatment.

Reply Date: 2024/02/17

More Info


Green phlegm with red specks can be concerning, and it's important to understand what these symptoms might indicate. The presence of green phlegm typically suggests that your body is fighting an infection. This can be due to a variety of causes, including viral infections like the common cold or flu, or bacterial infections such as bronchitis or pneumonia. The green color of the phlegm is often due to the presence of white blood cells, which your body sends to the site of infection to help fight off pathogens.

The red specks in your phlegm, however, are more concerning. If these specks are indeed blood, it could indicate a few different things. Minor causes of blood in phlegm can include irritation of the throat or lungs, which can occur from excessive coughing, dry air, or even a recent upper respiratory infection. However, if the blood is more pronounced or if you notice an increase in the amount of blood, it could be indicative of more serious conditions such as bronchitis, pneumonia, or even more severe issues like lung cancer or pulmonary embolism, especially if accompanied by other symptoms like shortness of breath, chest pain, or significant coughing.

Given that you mentioned you have been experiencing a mild cold with green phlegm and occasional red specks, it is advisable to monitor your symptoms closely. If the red specks persist, increase in quantity, or if you develop additional symptoms such as fever, chills, or worsening cough, it would be prudent to seek medical attention. A healthcare professional can perform a thorough examination, possibly including imaging studies or lab tests, to determine the underlying cause of your symptoms.

In the meantime, ensure you stay hydrated, rest, and consider using a humidifier to help ease any irritation in your throat and lungs. Avoid irritants such as smoke or strong odors, and if you have any allergies, managing those can also help reduce symptoms.

In summary, while green phlegm can be a normal part of a respiratory infection, the presence of red specks warrants further investigation. It’s always better to err on the side of caution when it comes to potential blood in your phlegm, so don’t hesitate to reach out to a healthcare provider if you have any concerns.

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