While it is normal to have some mucus in the chest, inflammation, and build-up of mucus can cause wheezing, sore throat, and difficulty sleeping. Excess congestion is often accompanied by a cough that brings up phlegm.
Issues that can cause mucus to build up in the chest include:
· Acid reflux
· Bacterial and viral infections
· Chronic bronchitis
· Chronic obstructive pulmonary disease (COPD)
· Cystic fibrosis
· Other lung conditions
Treatment for throat mucus will vary depending on the reason for the mucus build-up. For instance, if allergies cause it, the remedy would be to avoid the allergen and treat the symptoms until they go away. If you regularly have an uncomfortable amount of mucus build-up, mucus that is accompanied by other symptoms, or mucous build up that continues to worsen, see your doctor.