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Guides: Hayfever

Last Updated: Tuesday May 10 2005 12:58 GMT

What is hayfever?

Bees on a flower
Hayfever happens when you become allergic to pollens.

Pollen comes from the male parts of plants.

When pollen comes into contact with the inside of the nose, it can start a reaction that can cause sneezing, itching and a runny or blocked nose.

It's more common during the summer when the levels of pollen are highest.

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