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Neuroblastoma What is neuroblastoma in children? Neuroblastoma is cancer that starts when immature nerve cells in the nervous system grow out of control. These cells are called neuroblasts. Over time, the out-of-control cells form a tumor. Neuroblastoma is the most common solid

Diarrhea in Children What is diarrhea in children? Diarrhea is when bowel movements (stools) are loose and watery. Your child may also need to go to the bathroom more often. Diarrhea is a common problem. It may last 1 or 2 days and go away on its own. If diarrhea lasts more than

Food Allergies in Children What is food allergy in children? A food allergy is when your child’s body has a bad immune reaction to a certain food. This is different from a food intolerance, which does not affect the immune system. This is true even though some of the same signs

Appendicitis in Children What is appendicitis in children? Appendicitis is a painful swelling, inflammation, and infection of the appendix. It's a medical emergency because the appendix can burst or rupture. This is serious and can lead to more widespread infection. If not

Pulmonary Stenosis in Children What is pulmonary stenosis in children? Pulmonary stenosis is a birth defect of the heart (congenital). It can happen when the pulmonary valve doesn’t grow as it should in a baby during the first 8 weeks of pregnancy. The pulmonary valve connects

Cerebral Palsy in Children What is cerebral palsy in children? Cerebral palsy (CP) is a brain (neurological) disorder that causes problems with normal motor function. It's a lifelong condition that affects how the brain and muscles communicate. CP affects body movement, muscle

Juvenile Arthritis and Other Rheumatic Diseases What are juvenile arthritis and other rheumatic diseases in children? Arthritis is an inflammation of the joints that causes pain and swelling. Juvenile arthritis is the term used for arthritis in children. The most common form of

Anorectal Malformation in Children What is an anorectal malformation in children? Anorectal malformations are birth defects, or problems that happen as an unborn baby is developing during pregnancy. With this defect, the anus and rectum don’t develop properly. They are the lower

Arrhythmias in Children What are arrhythmias in children? An arrhythmia is an abnormal heart rhythm. When a child has an arrhythmia, abnormal electrical signals sent through the heart muscle may cause the heart to beat too fast (tachycardia), too slow (bradycardia), or in an

Clubfoot in Children What is clubfoot in children? Clubfoot is a deformity of the foot. It’s when one or both feet are turned inward. The condition affects the bones, muscles, tendons, and blood vessels. Clubfoot is present at birth. It tends to affect more boys than girls. What