What is hay fever?
Hay fever, known medically as allergic rhinitis, is an allergic reaction that occurs when the immune system overreacts to normally harmless airborne substances, most commonly pollen. When a person with hay fever breathes in the allergen, their immune system releases chemicals including histamine, which cause the inflammation and irritation responsible for the familiar symptoms.
It is one of the most common allergic conditions, affecting large numbers of people. Hay fever is often seasonal, flaring up when particular pollens are in the air — tree pollen in spring, grass pollen in late spring and summer, and weed pollen later in the year. Some people, however, have symptoms all year round, triggered by allergens such as dust mites, mould or animal dander, a form sometimes called perennial allergic rhinitis.
Symptoms
Hay fever symptoms mainly affect the nose, eyes and throat, and can range from a mild nuisance to significantly disruptive. Common symptoms include:
- •Frequent sneezing
- •A runny or blocked nose
- •Itchy, red or watery eyes
- •An itchy throat, mouth, nose or ears
- •Loss of smell
- •Headache or sinus pressure
- •Tiredness, partly from disturbed sleep
Triggers
Identifying what triggers your hay fever helps you anticipate and reduce symptoms. The main triggers are airborne allergens, which vary by season and environment. Common triggers include:
- •Grass pollen, the most common trigger, peaking in late spring and summer
- •Tree pollen, typically in early spring
- •Weed pollen, often later in the year
- •Mould spores
- •House dust mites (more often year-round symptoms)
- •Animal fur or dander
Relief and treatment
While hay fever cannot be cured, a combination of avoiding triggers and using treatments controls symptoms well for most people. Practical avoidance measures during high-pollen periods include staying indoors when pollen counts are high, keeping windows closed, showering and changing clothes after being outside, and wearing wraparound sunglasses to protect the eyes.
Several effective treatments are available, many over the counter. Antihistamines, as tablets or nasal sprays, reduce sneezing, itching and a runny nose. Steroid nasal sprays reduce inflammation and are particularly helpful for a blocked nose, working best when used regularly. Eye drops can relieve itchy, watery eyes. A pharmacist can advise on the best combination, and for severe or persistent hay fever not controlled by these, a doctor can offer further options.
Living with hay fever
For many people, hay fever is a seasonal challenge that returns each year, so planning ahead makes a real difference. Starting treatment such as antihistamines or steroid nasal sprays before the season begins, or as soon as symptoms start, often works better than waiting until symptoms are severe. Checking daily pollen forecasts helps you anticipate bad days and take extra precautions.
Hay fever can affect quality of life more than people sometimes realise, disturbing sleep, concentration and, for children, school performance. It can also worsen asthma in people who have both. Because of this, it is worth managing hay fever properly rather than simply enduring it. If over-the-counter treatments are not enough, a doctor can help with stronger options or, in some cases, refer for treatments that reduce sensitivity to specific allergens.
Hay fever in children
Hay fever is common in children and can affect them more than parents sometimes realise. Beyond the obvious sneezing and runny nose, hay fever symptoms can disturb a child's sleep, concentration and energy, which may show up as tiredness, irritability or difficulty focusing at school, particularly during exam season, which often coincides with high pollen counts.
Many hay fever treatments are suitable for children, but it is important to use ones appropriate for their age, so a pharmacist or doctor's advice is helpful. Child-friendly antihistamines and, where needed, steroid nasal sprays can relieve symptoms, alongside the same avoidance measures used for adults, such as keeping windows closed on high-pollen days and washing pollen off after being outside.
If a child's hay fever is disrupting their sleep, schoolwork or daily life, or is not controlled by over-the-counter treatments, it is worth seeing a doctor. Treating it properly not only brings relief but can also help with related conditions, as hay fever, asthma and eczema often occur together in children.
When hay fever affects more than your nose
Although hay fever is often thought of as a minor nuisance, it can have wider effects worth recognising. Poorly controlled hay fever can disturb sleep, leading to daytime tiredness and reduced concentration that affect work, study and general wellbeing. The constant congestion and irritation can also contribute to headaches and sinus problems.
Hay fever is also closely linked with other allergic conditions. Many people with hay fever also have asthma, and hay fever can trigger or worsen asthma symptoms, which is why good control of both matters. There is also an overlap with eczema, and these conditions together are sometimes referred to as the atopic tendency, reflecting a shared underlying allergic predisposition.
Recognising these wider effects helps explain why managing hay fever properly is worthwhile rather than simply putting up with it. Effective treatment improves not just the nose and eyes but sleep, concentration, asthma control and overall quality of life, especially during peak allergy seasons.