Clear, Bubbly Phlegm: When to See an ENT or Pulmonologist - Otolaryngology

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Clear phlegm with bubbles?


Hello, doctor.
For the past few months, I have frequently had phlegm in my throat.
Initially, I visited a nearby ENT clinic, and the doctor said it was between an infection and allergies.
The medication provided some relief for a while, but after one or two months, its effectiveness became less noticeable.
The phlegm is clear and bubbly, and it tends to be thicker in the morning upon waking up.
I am planning to go to a large hospital for further examination, but I'm unsure whether to see a pulmonologist or an ENT specialist.

Lai, 10~19 year old female. Ask Date: 2024/06/12

Dr. Zheng Jueyi reply Otolaryngology


Hello, upper respiratory symptoms can lead to increased phlegm production.
It is advisable to first visit an otolaryngologist for an examination of the upper respiratory tract.
If there is no improvement, you may then consult a pulmonologist for an evaluation of the lower respiratory tract.

Reply Date: 2024/06/12

More Info


When dealing with persistent symptoms such as clear, bubbly phlegm, it is essential to understand the underlying causes and when to seek specialized medical advice. In your case, the presence of phlegm that is clear and bubbly, especially if it becomes thicker in the morning, can be indicative of several conditions, including allergies, respiratory infections, or even chronic conditions like asthma or bronchitis.

Initially, your visit to an ENT (Ear, Nose, and Throat) specialist was a good step, as they can evaluate conditions related to the upper respiratory tract. The fact that the doctor suggested your symptoms were between an infection and an allergy suggests that they were considering both possibilities. Allergies can lead to increased mucus production, which can manifest as phlegm, while infections can also produce similar symptoms.

The treatment you received may have provided temporary relief, but if the symptoms have returned or worsened, it may be time to consider further evaluation. The clear, bubbly nature of the phlegm is often associated with allergies or irritants, while thicker, discolored phlegm may suggest a bacterial infection or other complications.

Regarding whether to see a pulmonologist or return to an ENT, it depends on the progression of your symptoms and any additional signs you may be experiencing. If you have symptoms such as shortness of breath, wheezing, or persistent cough, a pulmonologist would be the appropriate specialist to evaluate potential underlying lung conditions. They can conduct tests such as pulmonary function tests, chest X-rays, or CT scans to assess your lung health.

On the other hand, if your symptoms are primarily related to nasal congestion, throat irritation, or ear issues, returning to an ENT might be more beneficial. They can perform a thorough examination of your nasal passages, throat, and ears to identify any blockages, infections, or structural issues that could be contributing to your symptoms.

In addition to these considerations, it is also important to monitor any other symptoms you may experience, such as fever, fatigue, or changes in your overall health. If you notice any of these, it may warrant a more immediate visit to a healthcare provider.

In summary, both ENT specialists and pulmonologists play crucial roles in diagnosing and treating respiratory symptoms. If your phlegm persists or worsens, and especially if you develop new symptoms, seeking further evaluation is advisable. It may also be beneficial to keep a record of your symptoms, including when they occur and any potential triggers, to provide your healthcare provider with comprehensive information for diagnosis and treatment.

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