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Catarrh, Mucus Build-Up and Congestion: Symptoms, Causes and Relief Options

This article is for general information only and does not replace advice from a qualified healthcare professional. Catarrh, mucus build-up and congestion can leave you feeling blocked up, heavy-headed, constantly sniffly or as if you need to clear your throat all day. It often happens alongside a cold, allergy symptoms or irritated airways, but it can also linger after the original trigger has started to settle. For many people, catarrh improves with time, sensible self-care and the right sympto …
2nd Apr 2026 Mohammed Sajjad, MPharm (Hons), GPhC-registered Pharmacist