Draft — pending approval. This page is a working draft and is not yet final.
The NHS definition
The NHS describes catarrh as a build-up of mucus in the nose, sinuses or back of the throat. It can involve a blocked nose or a feeling of mucus at the back of the throat. These descriptions are not a diagnosis of the cause for an individual.
Post-nasal drip in US sources
ENT Health uses post-nasal drip to describe the sensation of mucus collecting in the throat or dripping from the back of the nose. Catarrh and post-nasal drip can describe overlapping experiences; they are not a test that tells you the cause.
Useful questions for an appointment
Write down where you notice the feeling, when it happens and how long it has lasted. Ask your GP or doctor what the words in your appointment mean for you. Do not start, stop or change prescribed medicine based on a definition in an article.