Hay fever is the most common form of allergy, affecting up to 25 per cent of the population. Airborne allergies make summer a misery for at least 15 million people in the UK and are increasing at a rate of five per cent each year

'Allergic rhinitis', as it is also known, is now classified as a 'major chronic respiratory disease'. Its increase is hotly debated, but air pollution, especially the minute hydrocarbon particles from diesel engine exhausts, is thought to be a prime cause. Global warming, which means that summer starts earlier and may end later, may be another factor.

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A variety of hay fever treatments are available on the market. We look at ten of the best - both conventional and alternative - to help you choose the right one:

1. Flixonase Allergy Nasal Spray (£6.99/60 sprays) from pharmacies nationwide
A recent review suggested that nasal corticosteroid sprays, which have revolutionised hay fever treatment, offer better relief of symptoms than oral antihistamines, and that using both together does not provide additional benefit compared with using nasal corticosteroids alone. There is no clear evidence to suggest one nasal corticosteroid spray is more effective than another - all have a similar potential for causing nosebleeds. Some sprays are significantly more expensive, so it's worth trying the cheaper ones first. Apply two sprays per nostril per day, preferably in the morning, increasing to a maximum of twice daily use if required. Once control of symptoms is achieved, reduce down to just one spray per nostril per day. Do not use for more than three months.

2. Viva HealthZone Air Purifier (£69.99).
This air purifier quickly clears pollen, dust and other potential allergens from the air. It works on the root cause of hay fever and other allergies, thus reducing your need for medication. The dual turbo fan draws air into the purifier and subjects it to four purifying processes; a washable pre-filter removes large pollutant particles, a HEPA filter removes up to 98 per cent of sub-micron particles, a carbon filter absorbs unpleasant odours, while the integral ioniser refreshes the air and helps it feel cleaner.

3. Nasaleze Natural Hay fever and Allergy Protection (£7.99).
Nasaleze is a nasal powder that lines the nasal passages and sinuses to enhance the production of nasal mucus. This forms an invisible, gel-like filter over the lining of nasal passages that helps stop pollen triggering an allergic reaction. Squeeze and sniff the bottle to inhale the inert cellulose nasal powder. In most cases, hay fever symptoms are controlled within three to ten seconds and works for up to 24 hours.

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Ten of the best hay fever remedies

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