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Food Allergy What is a food allergy? A food allergy is when your immune system has a bad reaction to a certain food. This is different from a food intolerance, which does not involve the immune system. This is true even though some of the same signs may be present. What causes a

Fibromyalgia in Children, Adolescents and Teens What is fibromyalgia? Fibromyalgia is a condition that causes pain in muscles and soft tissues around the body. It is an ongoing (chronic) condition. It can affect the neck, shoulders, back, chest, hips, buttocks, arms and legs. The

Pulmonary Atresia What is pulmonary atresia? Pulmonary atresia (PA) is a heart defect. It happens when the baby's heart doesn’t form as it should in the uterus. This can happen during the first 8 weeks of pregnancy. PA is a problem with the opening of the pulmonary valve. This

Tricuspid Atresia What is tricuspid atresia? Tricuspid atresia (TA) is a heart defect present at birth (congenital). It occurs when the tricuspid valve doesn’t form, or only partly forms. Normally the tricuspid valve is located between the right upper chamber (atrium) and the

Total Anomalous Pulmonary Venous Return (TAPVR) What is total anomalous pulmonary venous return (TAPVR)? Total anomalous pulmonary venous return (TAPVR) is a congenital heart defect. This means that your child is born with it. It happens as the baby’s heart develops during the

Lactose Intolerance in Children What is lactose intolerance in children? Lactose intolerance is when the body can’t easily break down or digest lactose. Lactose is a sugar found in milk and milk products. If your child is lactose intolerant, your child may have unpleasant

Duchenne Muscular Dystrophy in Children What is Duchenne muscular dystrophy in children? Duchenne muscular dystrophy (DMD) is a genetic condition that weakens your child’s muscles. It is the most common muscular dystrophy, a kind of inherited muscle disease. DMD causes weakness

Atopic Dermatitis in Children What is atopic dermatitis in children? Atopic dermatitis is a long-term (chronic) skin condition. It causes red, dry, itchy, scaly skin. It’s a very common condition in babies and children. It usually first appears between ages 3 and 6 months. What

Glomerulonephritis in Children What is glomerulonephritis in children? The kidneys contain many coils of tiny blood vessels. Each of these is called a glomerulus. Glomeruli filter substances from the blood into the urine. Glomerulonephritis is a type of kidney disease where these

Gastroesophageal Reflux in Children What is gastroesophageal reflux in children? Gastroesophageal refers to the stomach and esophagus. The esophagus is the tube that connects the throat to the stomach. Reflux means to flow back or return. Reflux happens because the lower