of Medicine found that chronic throat clearing could be an indication of asthma in children.6
Infections
Various infections of the upper airways and throat can lead to excessive throat mucus that is hard to get rid of. When bacteria or viruses cause infection, the body produces more mucus to trap and destroy the germs. This can cause chronic coughing, clearing of the throat, and sneezing.
Sinusitis is an infection that causes the sinuses to become inflamed, swollen and filled with mucus. Among other symptoms, sinusitis can cause postnasal drip
