Post-nasal drip
Normally, all mucus secretions from the nose drain into the back of the throat and are swallowed in a process that we’re not usually aware of.
However, a person may feel as if mucus is accumulating at the back of their throat. This is termed ‘post-nasal drip’. This may be described as a feeling of mucus dripping or trickling down the back of their throat, which may trigger a cough. Post-nasal drip may occur when a person is suffering from a cold or an allergy.