What should you know about chronic post nasal drainage?

You may feel mucus at the back of the throat, need to clear it often, cough, or wake with a sore throat. A blocked or runny nose can occur alongside it. Allergic rhinitis, a common cold, sinusitis, acid reflux, and some airway conditions can produce similar throat symptoms. The sensation alone cannot identify which cause is present.

A clinician may ask about timing, exposure to dust or pets, heartburn, fever, facial pressure, wheeze, and the colour or amount of mucus. Persistent cough may need separate assessment, particularly if it affects sleep, exercise, or breathing.

Try gentle saline nasal rinsing with correctly prepared or sterile water, keep hydrated, and reduce exposure to smoke, strong fragrances, dust, or a known allergen. A pharmacist or clinician can advise whether a nasal spray or allergy treatment fits your symptoms. Use decongestant sprays only as directed, because prolonged use can worsen congestion.

If reflux symptoms accompany the drainage, discuss meal timing and treatment options with a clinician. Antibiotics are not useful for every cause of mucus, so do not self-start them. Arrange an appointment when symptoms continue, recur frequently, or are accompanied by a persistent cough.

Seek urgent help for severe breathing difficulty, blue or grey lips, swelling of the face or throat, confusion, or inability to swallow saliva. Arrange prompt assessment for coughing blood, severe facial pain or swelling, a high fever, or symptoms that worsen quickly. Persistent hoarseness, one-sided nasal blockage, or unexplained weight loss also deserves clinical review.

Ask what pattern best fits your symptoms, whether you need an examination of the nose and throat, and which treatments are safe with your other medicines. Ask how long to try a nasal treatment, what improvement should look like, and when persistent cough needs further testing.