Index
What is Post-Nasal Drip?
Post-nasal drip occurs when excess mucus from the nose or sinuses runs down the back of the throat, causing irritation, coughing, and frequent throat clearing. Both adults and children can be affected, often during colds, allergies, or sinus infections. While usually mild, it can impact sleep, concentration, and daily activities.
What Causes Post-Nasal Drip?
Infections
- Colds and viral infections
- Sinus infections (sinusitis)
Allergies
- Hay fever
- Dust mites
- Animal dander
Irritants
- Smoke
- Pollution
- Strong smells or chemicals
Other Causes
- Weather changes or air conditioning
- Acid reflux (GORD)
- Hormonal changes
- Certain medications that dry out nasal passages
What Are the Common Symptoms of Post-Nasal Drip?
- Feeling of mucus dripping down the back of the throat
- Frequent throat clearing
- Persistent cough
- Sore or irritated throat
- Hoarse voice
- Bad breath
- Blocked or runny nose
How Is Post-Nasal Drip Diagnosed?
A GP will ask about symptoms and triggers. Online consultations can:
- Discuss symptoms and possible causes
- Assess associated issues such as cough, sinus pain, or reflux
- Advise on treatment and prescribe medications if appropriate
In-person assessment may be needed if:
- Symptoms last more than 6 weeks
- A sinus infection requires examination
- Structural nasal problems are suspected
Possible tests include:
- Allergy testing
- Nasal swabs
- Sinus imaging
How Long Does Post-Nasal Drip Last?
Most cases improve within a few days to a couple of weeks. Duration may be longer if caused by persistent allergies or chronic sinus problems.
How to Feel Better and Recover Quickly
Self-Care at Home
- Drink plenty of fluids
- Use saline nasal sprays or rinses
- Avoid smoke and other irritants
- Use a humidifier
- Sleep with head slightly elevated
- Take over-the-counter antihistamines for allergy symptoms
Treatment from a GP
- Prescription antihistamines for allergies
- Steroid nasal sprays to reduce inflammation
- Short-term decongestants
- Treatment for suspected sinus infection
- Medication for acid reflux if contributing
When Referral Is Needed
- Persistent symptoms despite treatment
- Recurrent sinus infections
- Suspected structural issues (nasal polyps)
- Allergy symptoms requiring specialist assessment
When to Seek Urgent Medical Help
Go to A&E or call 999 if:
- Difficulty breathing
- Swelling of face or throat
- Severe allergic reaction (anaphylaxis)
- High fever with severe sinus pain
- Persistent blood in mucus
Use urgent care instead of online GP services if:
- Symptoms last longer than 4–6 weeks despite treatment
- Severe sinus pressure or persistent headaches
- Difficulty swallowing fluids
- Symptoms worsen suddenly
How Dr.Online UK Can Help
- Same-day online GP appointments
- Assessment of symptoms and likely causes
- Private prescriptions when appropriate
- Fit notes if needed
- Referral letters to ENT or allergy specialists
Guidance on managing symptoms at home
