Morning Sore Throat with Dark Brown Phlegm: Causes and Solutions - Otolaryngology

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Waking up in the morning with a sore throat and producing dark brown phlegm?


Hello Doctor, I usually do not have any coughing symptoms, but for the past two to three months, I often wake up with a sore throat and expel dark brown phlegm (which comes from the nasal cavity/throat, not the lungs).
After about two to three hours in the morning, it lessens to normal until I go to sleep at night.
How should I address this symptom? Would improving my sleep habits be effective? Thank you.

Mr. Zhu, 30~39 year old female. Ask Date: 2017/01/21

Dr. Zheng Jueyi reply Otolaryngology


Hello, if there is no improvement, it is recommended to visit an otolaryngology clinic or hospital for examination.
Wishing you safety and health.
Sincerely, Dr.
Cheng Jue-Yi, Director of the Department of Otolaryngology, Taoyuan Hospital, Ministry of Health and Welfare.

Reply Date: 2017/01/21

More Info


Morning sore throat accompanied by dark brown phlegm can be concerning, and it's important to understand the potential causes and solutions for this condition. Based on your description, it seems that you experience throat pain primarily in the morning, along with the production of dark brown phlegm, which tends to improve after a few hours. This symptom pattern suggests a few possible underlying issues.

Firstly, the presence of dark brown phlegm often indicates the presence of dried mucus, which can be a result of several factors, including environmental irritants, allergies, or even post-nasal drip. Post-nasal drip occurs when excess mucus accumulates in the nasal cavity and drips down the back of the throat, leading to irritation and discomfort. This can be exacerbated by sleeping in a dry environment or exposure to allergens such as dust, pollen, or pet dander.

Another potential cause for your symptoms could be related to acid reflux, where stomach acid flows back into the esophagus, causing irritation and leading to throat discomfort. This can also result in the production of phlegm as the body attempts to protect the throat from irritation.

Additionally, if you are a smoker or are exposed to secondhand smoke, this could contribute to your symptoms. Smoking can irritate the throat and lead to increased mucus production, which may explain the dark brown phlegm you are experiencing.

To address your symptoms, consider the following strategies:
1. Hydration: Ensure you are drinking enough fluids throughout the day. Staying well-hydrated can help thin mucus, making it easier to expel and reducing throat irritation.

2. Humidification: If you are sleeping in a dry environment, using a humidifier in your bedroom can help maintain moisture in the air, which may alleviate throat discomfort and reduce mucus production.

3. Allergy Management: If you suspect allergies may be contributing to your symptoms, consider using over-the-counter antihistamines or nasal sprays to help manage your symptoms. Additionally, keeping your living space clean and free from dust can help minimize exposure to allergens.

4. Avoid Irritants: If you smoke or are exposed to smoke, consider reducing or eliminating this exposure. Also, avoid other irritants such as strong perfumes or cleaning products that may exacerbate your symptoms.

5. Sleep Position: Elevating your head while sleeping can help reduce post-nasal drip and may alleviate morning throat pain. Consider using an extra pillow or a wedge pillow to achieve this.

6. Consult a Healthcare Provider: If your symptoms persist or worsen, it is advisable to consult a healthcare provider. They can perform a thorough evaluation, which may include a physical examination and possibly further tests to determine the underlying cause of your symptoms.

In conclusion, while morning sore throat with dark brown phlegm can be uncomfortable, there are several strategies you can implement to alleviate your symptoms. Improving your sleep environment, staying hydrated, and managing potential allergens can all contribute to better throat health. However, if your symptoms do not improve or if you have additional concerns, seeking medical advice is essential to rule out any serious conditions and to receive appropriate treatment.

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