Dehydration happens when your body doesn’t have as much water as it needs. Without enough, your body can’t function properly. You can have mild, moderate, or severe dehydration depending on how much fluid is missing from your body.
It’s normal to lose water from your body every single day by sweating, breathing, peeing and pooping, and through tears and saliva. Usually, you have to replace the lost liquid by drinking fluids and eating foods that contains water. If you lose too much water or don’t drink and eat enough, you can get dehydrated.
You can lose more water than usual with:
- A fever
- Excessive sweating
- Peeing a lot
You may not replace the water you lose because:
- You’re busy and forget to drink enough
- You don’t realize that you’re thirsty
- You don’t feel like drinking because you have a sore throat or mouth sores, or you’re sick to your stomach.