Every spring, millions of people across the UK ask the same question: is this hay fever or a cold? With pollen season starting earlier and cold viruses still circulating in April, the two can be genuinely confusing. In most cases the key distinction is simple: if your eyes are itchy, it is almost certainly hay fever. But there are several other reliable differences that help you work out which you have — and what to do about it.
The Fastest Way to Tell: Itchy Eyes
The single most reliable differentiator is eye itchiness. Hay fever causes allergic conjunctivitis — itchy, red, watery eyes — in around 80% of sufferers. Colds rarely cause itchy eyes.
If your eyes are itching as well as your nose, it is almost certainly hay fever. If your eyes are watery but not itchy, that can occur with either condition, but during pollen season hay fever is still the more likely explanation.
Hay Fever vs Cold: Symptom Comparison
| Symptom | Hay fever | Cold |
|---|---|---|
| Sneezing | Bursts of 10–20 in a row | More spaced out |
| Runny nose | Thin, clear, watery | Starts clear, often turns thick and yellow-green |
| Congestion | Fluctuates (worse morning and evening) | More constant |
| Itchy eyes, nose, throat or ears | Common | Rare |
| Fever or raised temperature | No | Possible |
| Fatigue | Persistent through the season | Worst in the first 2–3 days |
| Muscle aches | No | Yes |
| Sore throat | Itchy | Painful, inflamed |
Duration: The Clearest Long-Term Signal
A cold typically lasts seven to ten days. You feel progressively worse for two to three days, plateau, then recover. If your symptoms are still present after two weeks, it is very unlikely to be a cold — you probably have hay fever or another allergy.
Hay fever symptoms last for the duration of the relevant pollen season: anywhere from a few weeks (tree pollen, March–May) to several months (grass pollen, May–July, plus weed pollen through September). They vary day by day with the pollen count — better on rainy days, much worse on warm, dry, windy days. That variation with weather and season is a strong signal of hay fever.
When You Have Both
It is entirely possible to have a cold during hay fever season — hay fever can make you more susceptible to respiratory infections because the inflammation affects your airways' natural defences.
Signs you might have both: symptoms that start with clear watery discharge and itchy eyes (hay fever), then worsen with fever, body aches and yellow discharge (a cold developing on top). In this case, treat both: antihistamines for the allergic component, and rest and fluids for the viral one. NHS guidance suggests seeing a GP if you have difficulty breathing, a high fever, or symptoms lasting beyond three weeks.
What to Take: Hay Fever vs Cold Treatments
For hay fever: non-drowsy antihistamines (cetirizine, loratadine or fexofenadine) available over the counter from UK pharmacies; a steroid nasal spray such as beclometasone (OTC) or fluticasone (on prescription); antihistamine eye drops for itchy eyes; and a MERV-13 air purifier running in the bedroom overnight to reduce the pollen you breathe while you sleep.
For a cold: rest and adequate fluids are the most important steps; paracetamol or ibuprofen for fever and aches; and short-term decongestants for a blocked nose. Antibiotics treat neither hay fever nor colds — both are either allergic or viral, not bacterial.
When to See a GP
Most UK hay fever cases can be managed with over-the-counter treatments from a pharmacy. See a GP if:
- Symptoms have not improved after two to four weeks of OTC antihistamines and nasal spray.
- You have significant breathing difficulties or wheeze (this may indicate asthma complicating hay fever).
- Symptoms are significantly affecting your sleep, work or quality of life.
- You want a formal allergy test to identify your triggers or to discuss immunotherapy.
For a cold, see a GP if symptoms persist beyond three weeks, you have a very high fever (over 39°C), or you have difficulty breathing or chest pain.
