Hay fever is when your body reacts to certain things in the air, like pollen or dust, and it can make you sneeze, have a runny nose, or feel itchy and uncomfortable. It's called "hay fever" because it often happens during times when there is a lot of pollen in the air, like during the spring and summer months.

When you have hay fever, your body's defense system thinks that the harmless things in the air, like pollen, are actually harmful invaders. So, it tries to protect you by releasing a substance called histamine. This histamine causes your body to have those uncomfortable symptoms like sneezing and itching.

But don't worry! It's not really a fever, and it's not dangerous. It's just your body's way of trying to protect you, even if it's a bit overreacting to things that are not really a threat.

Some people have hay fever because their bodies are more sensitive to certain allergens, like pollen or dust. It's a bit like having a super-powered alarm system that goes off even when there's no real danger.

If you have hay fever, you can talk to a doctor who can help you find ways to feel better, like taking special medicines or avoiding the things that trigger your symptoms. And remember, it's okay to have hay fever—it's just your body being a little extra protective!