The Met Office issued a red alert for pollen this week — the highest severity on their scale. Birch pollen counts across London and the South East have hit "very high" levels, driven by the warmest start to April in 80 years. For roughly 16 million people in the UK who suffer from hay fever, this week has been miserable.
But here's a question I ask patients almost every day in clinic: is your blocked nose really just hay fever?
Because for a significant number of people, the answer is no — or at least, not entirely. Hay fever is making things worse, but an underlying structural problem in the nose is the reason they can never quite breathe properly, even outside pollen season. And that distinction matters, because the treatment is completely different.
I'm Mr David Whitehead, a Consultant ENT & Facial Plastic Surgeon on Harley Street. I see patients every week who have spent years assuming their permanently blocked nose was "just allergies." Many of them have a deviated septum, turbinate hypertrophy, or nasal valve weakness that no amount of antihistamine will fix. This post explains how to tell the difference — and what your options are.
The Numbers Are Staggering
Hay fever affects approximately one in four people in the UK — and the prevalence has tripled over the last 20 years.1 Hospital visits for pollen-related allergic rhinitis have increased twenty-fold between 2002 and 2024. The UK has one of the highest rates of allergic rhinitis in the world — 29% of the population, compared with under 6% in France.
Next week (20–26 April) marks Allergy Awareness Week 2026, with the launch of the UK's first National Allergy Strategy. The message is clear: diagnosis matters. Knowing exactly what you're allergic to — and whether allergies are the whole story — can transform your treatment.
What You Can Do Today
If you're struggling right now, there are evidence-based steps you can take immediately.
1. Saline nasal irrigation
Start rinsing your nose with a large-volume saline system like NeilMed Sinus Rinse, available over the counter at Boots and most UK pharmacies. This physically washes pollen, dust, and mucus out of the nasal passages before they trigger an inflammatory response.
A Cochrane systematic review confirmed that saline irrigation improves symptoms in allergic rhinitis,2 and a meta-analysis found a 23% greater improvement when irrigation is added to standard treatment.3 It's safe, cheap, and has no side effects. Use it morning and evening during pollen season.
2. Upgrade your nasal spray
Most people with hay fever rely on an over-the-counter steroid spray (like Beconase) or an antihistamine tablet. If that isn't controlling your symptoms, upgrade to Dymista Control — now available directly from your pharmacy counter without a prescription. It combines an antihistamine (azelastine) and a steroid (fluticasone) in one formulation.
Why does this matter? A 2024 network meta-analysis of all available intranasal treatments confirmed that the combination of antihistamine plus corticosteroid in a single spray is more effective than either component alone.4 Dymista is the only combined spray available in the UK. It begins working within five minutes and is licensed for continuous use.
3. Antihistamine tablets
Non-drowsy antihistamines (cetirizine, loratadine, fexofenadine) remain a useful baseline. But if your nose is your main problem, they are significantly less effective than topical nasal treatment — which is why guidelines recommend nasal sprays as first-line therapy, not tablets.1
When Hay Fever Treatment Isn't Enough
Here's the pattern I see repeatedly: a patient tells me they've tried every spray, every tablet, every home remedy. Their nose is always blocked — worse in pollen season, but never truly clear. They sleep with their mouth open. They snore. They can't smell properly. They assume they just have "bad allergies."
When I examine them with a nasendoscope — a thin flexible camera passed gently through the nostril — I often find a deviated nasal septum, enlarged turbinates, or both. Sometimes I also find nasal polyps.
These are structural problems. No spray will straighten a deviated septum. No antihistamine will shrink bone.
The compounding effect
This is the critical concept: structural narrowing and allergic swelling compound each other. If your septum is deviated, one nasal passage is already narrower than it should be. When allergic inflammation swells the lining — which hay fever does — that narrower passage blocks completely. The wider side may cope, but your overall airflow drops dramatically.
A 2024 meta-analysis by Wu and colleagues demonstrated that patients with both a deviated septum and allergic rhinitis had significantly greater symptom improvement after septoplasty compared to spray therapy alone — with improvement across all cardinal symptoms: obstruction, rhinorrhoea, sneezing, and itching.5
What I Can Do That Your GP Can't
There is no criticism of GPs here — they manage hay fever brilliantly. But there are things an ENT specialist can offer that general practice cannot.
Nasendoscopy
A GP looks into your nose with a light. I look into your nose with a high-definition endoscope that shows me every millimetre of your nasal anatomy — the septum, the turbinates, the sinus openings, and whether polyps are lurking behind the middle turbinate where no torch can reach. This takes 60 seconds per side and gives a definitive structural diagnosis.
ALEX 3 allergy testing
Most allergy testing in the UK involves either skin prick tests (limited to 20–30 allergens, affected by antihistamines, small risk of reaction) or individual RAST blood tests (one allergen at a time, expensive to do comprehensively).
I use the ALEX 3 test from MacroArray Diagnostics — a next-generation multiplex blood test that simultaneously measures your immune response to over 300 allergens from a single blood sample. It uses component-resolved diagnostics (CRD), testing against individual allergenic proteins rather than crude extracts. This means it can distinguish genuine allergy from cross-reactivity — for example, telling whether a birch pollen-allergic patient is truly allergic to apple or simply cross-reacting via a shared protein.6
Why does this matter? Because knowing your precise allergenic profile changes treatment. It guides whether immunotherapy (desensitisation) is appropriate, identifies triggers you may not have suspected, and rules out allergies you don't actually have. As the National Allergy Strategy emphasises: diagnosis matters.
CT scan and surgical planning
If a structural problem is identified, a CT scan of the sinuses maps out the anatomy in detail — showing the degree of septal deviation, the size of the turbinates, any sinus disease, and the relationship between all the structures that contribute to nasal airflow.
When Surgery Makes Sense
Not everyone with a blocked nose needs surgery. But if you have a significantly deviated septum that causes year-round obstruction — made dramatically worse by hay fever — then surgery is the most effective long-term solution.
Septoplasty
Septoplasty straightens the nasal septum to equalise airflow. It is performed entirely through the nostrils (no external cuts), under general anaesthesia, as a day case. The UK's definitive evidence comes from the NAIROS trial — a randomised controlled trial across 17 NHS hospitals — which showed that septoplasty produced a 20-point improvement in SNOT-22 symptom scores compared to medical management alone, sustained at 12 months.7
That's a large, clinically meaningful difference — the kind patients describe as life-changing.
Septorhinoplasty — function and form in one operation
Here's something many patients don't realise: if you're already having surgery to fix your breathing, and you've ever thought about changing the shape of your nose, combining septoplasty with rhinoplasty (septorhinoplasty) means one anaesthetic, one recovery, and a nose that works and looks better.
As a dual-qualified ENT and facial plastic surgeon, I assess both the functional and aesthetic anatomy in every consultation. Many of my rhinoplasty patients originally came to me about breathing — and discovered that addressing both concerns together was the most efficient path.
Turbinate reduction
If your turbinates (the bony shelves inside the nose that warm and humidify air) are chronically enlarged, turbinate reduction can be performed at the same time as septoplasty. Evidence shows that adding turbinoplasty to septoplasty provides additional improvement in patients with allergic rhinitis.8
The Practical Pathway
If you recognise yourself in this article, here's what I'd suggest:
Step 1 — Start saline irrigation and optimise your medical treatment (Dymista via your GP if standard sprays aren't working).
Step 2 — If your nose remains blocked despite maximal medical therapy — or if you're blocked even outside pollen season — book a consultation with an ENT specialist.
Step 3 — At your consultation, I'll examine your nose with an endoscope, arrange ALEX 3 allergy testing to map your exact allergenic profile, and if needed, order a CT scan to assess the structural anatomy.
Step 4 — We'll discuss your options: continued medical management, surgery, or a combination. Every recommendation is evidence-based, personalised, and honest.
Consultations are available to self-pay patients (£250) and are covered by all major private medical insurers.
This article was written ahead of [Allergy Awareness Week 2026](https://www.allergyuk.org/allergy-awareness-weeks/) (20–26 April), which marks the launch of the UK's first National Allergy Strategy. If you're struggling with a nose that never fully clears, you don't have to live with it.
References
- Scadding GK, Kariyawasam HH, Scadding G, et al. BSACI guideline for the diagnosis and management of allergic and non-allergic rhinitis (Revised Edition 2017). Clin Exp Allergy. 2017;47(7):856-889. doi:10.1111/cea.12953
- Head K, Snidvongs K, Glew S, et al. Saline irrigation for allergic rhinitis. Cochrane Database Syst Rev. 2018;6(6):CD012597. doi:10.1002/14651858.CD012597.pub2
- Hermelingmeier KE, Weber RK, Hellmich M, Heubach CP, Mösges R. Nasal irrigation as an adjunctive treatment in allergic rhinitis: a systematic review and meta-analysis. Am J Rhinol Allergy. 2012;26(5):e119-e125. doi:10.2500/ajra.2012.26.3787
- Sousa-Pinto B, Anto A, Czarlewski W, et al. Efficacy and safety of intranasal medications for allergic rhinitis: network meta-analysis. Allergy. 2024;79(12):3229-3242. doi:10.1111/all.16384
- Wu Y, Liu Y, Wang C, et al. The benefits of septoplasty for patients with deviated nasal septum and allergic rhinitis: a meta-analysis. Sci Rep. 2024;14:28693. doi:10.1038/s41598-024-80377-3
- Scala E, Alessandri C, Palazzo P, et al. A qualitative and quantitative comparison of IgE antibody profiles with two multiplex platforms for component-resolved diagnostics. Clin Exp Allergy. 2021;51(11):1450-1460. doi:10.1111/cea.14016
- Carrie S, Barmby J, Bray D, et al. Effectiveness of septoplasty compared to medical management in adults with obstruction associated with a deviated nasal septum: the NAIROS RCT. Health Technol Assess. 2024;28(4):1-120. doi:10.3310/MVFR4028
- Ghosh SK, Chakraborty D, Mukherjee S, et al. Role of bilateral inferior turbinoplasty as an adjunct to septoplasty. Ear Nose Throat J. 2021;102(7):NP297-NP302. doi:10.1177/01455613211015440