Constant phlegm or mucus in the throat is annoying—and often misunderstood. It’s usually not just “too much mucus,” but your body reacting to irritation, inflammation, or infection.
Here’s a clear breakdown of the real causes and what actually helps:
Common Causes of Constant Phlegm
1. Post-Nasal Drip (Most Common)
Mucus from your nose/sinuses drips down your throat.
Causes:
Allergies (dust, pollen)
Sinus infections
Cold weather
Strong smells
Clues:
