Why do tickles happen when the brain is confused?

Tickles happen when your brain is confused because it can't tell what's really happening on your skin.

Imagine you're playing hide-and-seek with a friend who loves to tickle you. When they poke your sides, your skin feels something strange, like someone is dancing on it with tiny feet! Your brain gets a message: “Something is touching me!” But here’s the trick, your brain doesn’t know if that touch came from your own hand or from someone else's fingers. It’s like trying to tell if you're wearing a sock or someone is holding your foot, it just can't be sure!

Your brain has two ways of getting information about touch:

• One way tells you when you move your body, like when you laugh and tickle yourself.
• The other way tells you when something else moves on your skin, like a friend's fingers.

When both are working at the same time, your brain gets confused, it thinks it’s being tickled by someone else, even if it was you who started it! That confusion is what makes you laugh and feel ticklish.