What Is Phlegm?
Phlegm is a thick type of mucus produced by your respiratory system, including your nose, throat, sinuses, and lungs.
Its primary functions include:
- Trapping dust, bacteria, viruses, and allergens
- Keeping your airways moist
- Protecting your lungs from infection
- Helping remove harmful particles from your respiratory tract
Normally, you swallow mucus without noticing it. However, when your body produces more mucus than usual—or when it becomes thicker—it may accumulate in the throat and create the uncomfortable feeling of needing to constantly clear it.
Why Do I Always Have Mucus in My Throat?
Several conditions can increase mucus production or prevent it from draining properly.
1. Postnasal Drip
Postnasal drip is one of the most common reasons people experience constant throat mucus.
It occurs when excess mucus from the nose and sinuses drains down the back of the throat instead of leaving through the nostrils.
Common causes include:
- Seasonal allergies
- Common cold
- Sinus infections
- Dry air
- Environmental irritants
Symptoms often include:
- Frequent throat clearing
- Tickling sensation in the throat
- Persistent cough
- Bad breath
- Hoarseness
Treatments may include saline nasal sprays, antihistamines (when allergies are involved), staying hydrated, and using a humidifier.
