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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

Occupational Lung Diseases What are work-related lung diseases? Work-related lung diseases are lung problems that are caused by certain work environments. They are caused by breathing materials into the lungs. These lung diseases may have lasting effects, even after the exposure

Spinal Muscular Atrophy in Children What is spinal muscular atrophy in children? Spinal muscular atrophy (SMA) is a disease of the nerves and muscles caused by certain genes. It affects the motor neurons in the spinal cord. It causes muscle wasting and weakness. What causes

Wilms Tumor What is Wilms tumor? Wilms tumor is a cancerous tumor that starts in the cells of the kidney. It’s the most common type of kidney cancer in children. It’s often found by the time a child is age 5. The tumor can be very large before it’s found. And it may spread

Psoriatic Arthritis in Children What is psoriatic arthritis in children? Psoriatic arthritis is a rare form of arthritis, or joint inflammation, that affects the skin and joints. It's an ongoing (chronic) autoimmune condition. It causes a red, scaly, itchy rash. It also causes

Craniosynostosis What is craniosynostosis? The skull is made up of 8 bones and joints where the bones of the skull meet (sutures). These sutures allow the skull to grow as an infant grows and develops. Over time, the sutures close and the bones fuse together. This forms the skull

Hypoplastic Left Heart Syndrome (HLHS) in Children What is hypoplastic left heart syndrome in children? Hypoplastic left heart syndrome (HLHS) is a group of defects of the heart and large blood vessels. A child is born with this condition (congenital heart defect). It occurs when

Tetralogy of Fallot (TOF) What is tetralogy of Fallot? Tetralogy of Fallot (TOF) is a set of 4 congenital heart defects that happen together. Tetralogy refers to the number 4. Congenital means that a baby is born with them. The set of 4 defects are: Narrowing (stenosis) of the

Truncus Arteriosus (TA) What is truncus arteriosus? Truncus arteriosus is a heart defect that is present at birth (congenital). It happens when there is an abnormal connection between the aorta and pulmonary artery. Normally, the aorta and the pulmonary artery are separate. In

Tourette Disorder in Children What is Tourette disorder in children? Tourette disorder (TD) is a neurological disorder. It is also called Tourette syndrome. The disorder causes repeated tics. Tics are sudden, uncontrolled vocal sounds or muscle jerks. Symptoms of TD often start