Can Dehydration Cause a Headache ?

Dehydration can make your head feel like it’s full of bubbles, and that might give you a headache.

Imagine your body is like a water balloon. When you're hydrated, the balloon is nice and full, keeping everything in balance. But when you’re dehydrated, you’re like a balloon with some of the water let out, it starts to shrink, and things inside shift around.

Your brain lives inside your skull, which is like a tough, bony shell. When you're dehydrated, sometimes your body makes less fluid (like the water in that balloon), so your brain can get a little smaller or move up against the top of your skull, kind of like when you push your hand up against the ceiling and it feels tight.

That shift or pressure change is what can cause a headache, just like when your foot gets sore after being in a too-tight shoe for too long.

So, next time you're thirsty and get a headache, think about your brain doing a little stretch, and maybe reach for some water! Dehydration can make your head feel like it’s full of bubbles, and that might give you a headache.

Imagine your body is like a water balloon. When you're hydrated, the balloon is nice and full, keeping everything in balance. But when you’re dehydrated, you’re like a balloon with some of the water let out, it starts to shrink, and things inside shift around.

Your brain lives inside your skull, which is like a tough, bony shell. When you're dehydrated, sometimes your body makes less fluid (like the water in that balloon), so your brain can get a little smaller or move up against the top of your skull, kind of like when you push your hand up against the ceiling and it feels tight.

That shift or pressure change is what can cause a headache, just like when your foot gets sore after being in a too-tight shoe for too long.

So, next time you're thirsty and get a headache, think about your brain doing a little stretch, and maybe reach for some water!