Doctors Rarely Explain It… 4 Overlooked Causes of Constant Phlegm in Your Throat

1️⃣ Post-Nasal Drip (Mucus From the Nose)

One of the most frequent causes is post-nasal drip. This happens when excess mucus from the nose and sinuses slowly drains down the back of the throat.

This can happen due to:

Sinus infections

Seasonal allergies

Cold or flu

Nasal inflammation