Also known as seasonal allergic rhinitis, hay fever is when you have an allergy to pollen, which is produced by trees, plants and flowers.
According to Allergy UK, hay fever affects between 10-30% of all adults and as many as 40% of children, so it is a common condition.
The condition is usually worst during the spring and summer, as the pollen count is usually at its highest during these seasons, but it affects some people year-round. The pollen count is high generally on hot, dry and windy days, so your symptoms may be worse on days like this.
When your body comes into contact with the pollen, it can cause cold-like symptoms. Your nose, eyes mouth and throat release chemicals, which causes the allergic reaction.