IgA Vasculitis is a condition that involves swelling (inflammation) of small blood vessels. The swollen blood vessels leak into the skin, joints, intestines, and kidneys.

Fibromyalgia is a condition that causes pain in muscles and soft tissues all over the body. It is an ongoing (chronic) condition. It can affect the neck, shoulders, back, chest, hips, buttocks, arms, and legs.

The cholesterol in blood comes from 2 sources: the foods your teen eats and their liver. The liver, however, makes all of the cholesterol your teen's body needs.

Juvenile dermatomyositis (JDM) is a rare disease that causes muscle inflammation and a skin rash.

Arthritis is an inflammation of the joints that causes pain and swelling. Juvenile arthritis is the term used for arthritis in children. Read on to learn more.

Some breast changes or conditions are related to a young woman's menstrual cycle, but others may occur at any time. Most breast conditions are benign.

Detailed information on wheat allergy, a type of food allergy, including how to read a label for a wheat-free diet.

Detailed information on allergy triggers and symptom control

Tree nuts include almonds, pecans, and walnuts. Tree nuts are also found in many food products. Here's what you need to know.

When your child has a soy allergy, they can't have any foods containing soy. Read on for detailed information on how to manage a soy-free diet. This includes how to read food labels, other possible sources of soy, and tips when eating out.