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Granulomatosis with Polyangiitis (GPA) What is granulomatosis with polyangiitis? Granulomatosis with polyangiitis (GPA) is an autoimmune disorder. An autoimmune disorder occurs when the body's immune system attacks and destroys healthy tissue. GPA causes inflammation, swelling

Toxic Epidermal Necrolysis in Children What is toxic epidermal necrolysis in children? Toxic epidermal necrolysis is a life-threatening skin disorder. It causes skin tissue to die, resulting in skin blistering and peeling. It's most often caused by a medicine reaction. A milder

Hives in Children What are hives? Hives (urticaria) are a sudden outbreak of red, itchy, and swollen areas on the skin. Hives can happen alone or as part of a severe allergic reaction. This condition often happens as an allergic reaction from eating certain foods or taking

IgA Vasculitis in Children What is IgA vasculitis in children? IgA vasculitis is also called Henoch-Schönlein purpura. It's not contagious. It involves swelling (inflammation) of small blood vessels. The swollen blood vessels leak into the skin, joints, intestines, and kidneys

Delayed Puberty What is delayed puberty? Puberty that happens late is called delayed puberty. This means a child's physical signs of sexual maturity don't appear by age 12 to 13 in girls or age 13 to 14 in boys. This includes breast or testicle growth but can also include pubic

Postpartum Thyroiditis What is postpartum thyroiditis? Postpartum thyroiditis happens when a person's thyroid gland becomes inflamed within one year of delivering a baby or having a miscarriage or abortion. This condition affects a small percentage of people. The thyroid is a

Aortic Stenosis in Children What is aortic stenosis in children? Aortic stenosis means that your child has a heart valve that is too narrow or is blocked. The aortic valve is one of four heart valves that keep blood flowing through the heart. The valves make sure blood flows in

Prematurity What is prematurity? A baby born before 37 weeks of pregnancy is considered premature or born too early. Other terms used for prematurity are preterm and the nicknames "preemie" or "premie." About 1 in every 10 infants are born prematurely. Twins and other multiples

Hip Fracture What is a hip fracture? A hip fracture is a break in the thighbone (femur) of your hip joint. Joints are areas where two or more bones meet. Your hip joint is a "ball and socket" joint, where your thighbone meets your pelvic bone. The ball part of your hip joint is

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