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.

Anyone can get athlete's foot. Find out how to avoid this itchy skin condition in this article for kids.

A VP shunt is a small plastic tube that helps drain extra cerebrospinal fluid from the brain. Most VP shunts are placed to treat hydrocephalus.

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

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.

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

From your sniffing nose to your wiggling toes, these 18 movies explain how the body works!

I know that at some point kids should drink nonfat milk as part of a low-fat diet. But what's the right age to switch kids from whole milk to nonfat milk? – Sheila Breast milk is the food of choice ...

Everyone feels sad sometimes. This slideshow has tips on what to do to help sad feelings ease away.

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

Fainting is a loss of consciousness that can be caused by many things. Here's what to do if your child faints or is about to faint.