4. Smoking or Air Pollution
Cigarette smoke and environmental pollutants irritate the lining of your respiratory tract, causing it to produce extra mucus as a protective measure.
5. Gastroesophageal Reflux (GERD)
Acid reflux can cause stomach acid to reach your throat, leading to irritation and excessive mucus production. People with GERD often feel a lump in their throat or frequent throat clearing.
6. Dehydration
When your body is dehydrated, mucus becomes thicker and stickier, making it harder to swallow and causing that “mucus in the throat” sensation.