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 ...

Period cramps can be mild or they can really hurt. But there are things you can do to feel better. Let's find out what cramps are and what to do if you get them. What Are Period Cramps? Cramps happen ...

Testicular torsion is an emergency condition. It happens when the spermatic cord, which provides blood flow to the testicle, rotates and becomes twisted. The twisting cuts off the testicle's blood ...

Find out what you can do if you think you or a friend has a drug or alcohol addiction - from recognizing the warning signs to suggestions to help you stay clean.

What should you expect as your child grows? Learn how to understand and deal with your child's changing body and mind from infancy through the teen years.

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.

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.

Where would you be without your bones? Learn more about the skeletal system in this article for kids.

It’s normal for people to masturbate. Some people do it to relieve stress or tension. It’s nothing to be ashamed of or embarrassed about.

Doctors usually order an IgA (immunoglobulin A) blood test to see why some infections keep coming back.

Juvenile idiopathic arthritis (JIA) is a group of disorders that cause arthritis (stiff, swollen, painful joints) in children.

What Are Helicobacter pylori? Helicobacter pylori (H. pylori) are a type of bacteria. These germs are a common cause of digestive illnesses, including: gastritis: the irritation and inflammation of ...