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What is pericarditis? Pericarditis is inflammation of the pericardium. This is the thin sac (membrane) that surrounds the heart. The pericardium holds the heart in place and helps it work right.…

What is ankylosing spondylitis? Ankylosing spondylitis (AS) is a type of arthritis that causes inflammation in certain parts of the spine. Ankylosing means stiff or rigid. Spondyl means spine. Itis…

What is Graves disease in children? Graves disease is an autoimmune disease. The immune system normally protects the body from germs with proteins called antibodies. But with an autoimmune disease,…

What is meningococcal infection in children? Meningococcal infection is an illness caused by bacteria. The most common forms of infection are: Meningococcal infection is not common, but it can be fatal.…

What is an evoked potentials study? An evoked potentials study measures electrical activity in the brain in response to stimulation of sight, sound, or touch. When the brain is stimulated…

Safety statistics Bikes, in-line skating, skateboarding, and scooters are very popular among children between ages 5 and 14. These activities are a great form of exercise. But without protective gear,…

What is hemolytic uremic syndrome (HUS) in children? Hemolytic uremic syndrome (HUS) occurs when damaged red blood cells block the kidney’s filtering system, which can lead to kidney failure in children.…

What is a lobectomy? A lobectomy is a surgery to remove one of the lobes of the lungs. The lungs have sections called lobes. The right lung has 3 lobes.…

Meningococcal vaccine is a shot to help prevent meningococcal disease. The disease is most common in babies, teens, and young adults. It’s also more common in people who have a…

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…