Histamine (HISS-tuh-meen): Histamine is a substance that the body releases during an allergic reaction. It can cause allergy symptoms that affect the eyes, nose, throat, skin, digestive system, and ...

The digestive process starts even before the first bite of food. Find out more about the digestive system and how our bodies break down and absorb the food we eat.

The nose, throat, and lungs are just a few parts of the body that make up the respiratory system. They work together to bring oxygen into the body and take carbon dioxide (a waste product) out.

Ever wonder how your eyes work? This article for kids takes you from the pupil to the retina and beyond.

Your heart is a hard-working muscle. Find out more in this article for kids.

A C-reactive protein (CRP) blood test is used to identify inflammation or infection in the body.

Toddlers are learning to navigate their world, communicate, and control some parts of their lives. They don't actually have control over much, but eating is one of the first areas where they will.

A "popped" eardrum is more than just painful - it can sometimes lead to hearing loss. Learn about ruptured eardrums and how to prevent them.

Most spider bites cause mild reactions, but some can cause serious illness or allergic reactions. Here's what to do if you think your child was bitten by a spider.

Parenting is incredibly challenging and rewarding. Here are 9 child-rearing tips that can help.

It's important to be consistent about discipline. If you don't stick to the rules and consequences, kids aren't likely to either. Find out how to vary your approach to fit your family.

What Is an Umbilical Hernia? An umbilical hernia happens when part of a child's intestines bulges through the abdominal wall inside the belly button. It shows up as a bump under the belly button. The ...