experience reflux without the other symptoms of heartburn. This condition is called laryngopharyngeal reflux, or silent reflux. The mucus forms when the stomach acid irritates the back or your throat and nasal airways and causes irritation and inflammation. This causes excessive throat clearing, a persistent cough, and a feeling of a lump in your throat.3
Allergies
Allergies can cause irritation at the back of the throat which can cause more mucus to be produced. Allergies are the body’s immune response to allergens and are most commonly caused by pollen
