Search Results

Vascular Malformations and Hemangiomas What are hemangiomas and vascular malformations? Hemangiomas Hemangiomas are growths of blood vessels. They’re also called birthmarks. But they often can't be seen at birth. They usually form in the first few weeks of life. These growths

Severe Combined Immunodeficiency (SCID) in Children What is SCID in children? SCID is a very rare disease. It causes a child to have a very weak immune system (immunodeficiency). As a result, the child is unable to fight off even mild infections. The disease is also known as the

Cholesterol, LDL, HDL, and Triglycerides in Children and Teens What is cholesterol? Cholesterol is a fat-like, waxy substance. It can be found in all parts of your child's body. It helps make cell membranes, some hormones, and vitamin D. The cholesterol in blood comes from 2

Menstrual Cramps (Dysmenorrhea) in Teens What are menstrual cramps in teens? Menstrual cramps are severe, painful cramps that occur during a period. There are two types: Primary. This type starts soon after a girl gets her first period. It's usually lifelong. But it may get

Neurocutaneous Syndromes in Children What are neurocutaneous syndromes in children? Neurocutaneous syndromes are disorders that affect the brain, spinal cord, organs, skin, and bones. The diseases are lifelong conditions that can cause tumors to grow in these areas. They can also

Overuse Injuries An increasing number of boys and girls are playing recreational and organized sports. As a result, there is a rise in the number of overuse injuries seen among children and teens. Most sports and overuse injuries are due to injuries that affect the bone, muscles

Autism Spectrum Disorder in Children What is autism spectrum disorder in children? Autism spectrum disorder (ASD) is a problem that affects a child’s nervous system and growth and development. It often shows up during a child’s first 3 years of life. Some children with ASD seem

Conduct Disorder in Children What is conduct disorder in children? Conduct disorder is a type of behavior disorder. It’s when a child has antisocial behavior. They may disregard basic social standards and rules. They may also: Be irresponsible Skip school or run away (delinquent

Oppositional Defiant Disorder (ODD) in Children What is oppositional defiant disorder (ODD) in children? Oppositional defiant disorder (ODD) is a type of behavior disorder. It's mostly diagnosed in childhood. Children with ODD show a pattern of uncooperative, defiant, and hostile

Anatomy and Function of the Heart Valves What are heart valves? The heart has four chambers: two upper chambers (atria) and two lower chambers (ventricles). Blood passes through a valve before leaving each chamber of the heart. The valves prevent the backward flow of blood