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Rheumatic Fever What is rheumatic fever? Rheumatic fever is a complex disease that affects the joints, skin, heart, blood vessels, and brain. It happens mainly in children between the ages of 5 and 15. It's an autoimmune disease that occurs after an infection with strep

Lymphatic Malformations in Children What is a lymphatic malformation in children? A lymphatic malformation is a lymphatic vessel that isn't formed correctly. The vessel traps the lymph fluid and causes cysts to form. Your child may have one or more of these cysts. Lymphatic

Introduction to Menopause What is menopause? When a person permanently stops having menstrual periods, this is called menopause. This means they can no longer get pregnant. Many doctors use the term menopause to refer to the period of time when hormone levels start to change

X-Linked Agammaglobulinemia in Children What is X-linked agammaglobulinemia in children? X-linked agammaglobulinemia is a rare genetic disease. It causes a weakened immune system. It is also known as Bruton's agammaglobulinemia. X-linked means that the gene that causes this

Chickenpox What is chickenpox? Chickenpox is a common childhood disease. It causes an itchy, blistering rash and is easily spread to others. Until the varicella vaccine for chickenpox became available in 1995, chickenpox infection was very common. Almost everyone had been

COVID-19: Pregnancy, Childbirth, and Postpartum If you’re pregnant or just had a baby, you likely have many questions about how COVID-19 could affect you and your child. If you're pregnant or have recently delivered (postpartum), you have a higher risk of more severe illness from

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

Juvenile Ankylosing Spondylitis (JAS) in Children What is juvenile ankylosing spondylitis in children? Juvenile ankylosing spondylitis is a type of arthritis. It affects the spine and the places where the muscles, tendons, and ligaments attach to the bone. Ankylosing means stiff

Vesicoureteral Reflux (VUR) in Children What is vesicoureteral reflux in children? Vesicoureteral reflux (VUR) is a condition in which urine in the bladder flows in the wrong direction. It goes up into the tubes (ureters) that lead to the kidneys. It often flows all the way back

Emphysema What is emphysema? Emphysema is a progressive chronic lung condition in which the tiny air sacs (alveoli) are damaged or destroyed. When this happens, it causes the tiny air sacs to rupture and create one big air pocket instead of many tiny ones. Air becomes trapped in