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Toxic shock syndrome (TSS) is a cluster of symptoms that involve many systems of the body. Certain bacterial infections release toxins into the blood stream. These then spread the toxins to many body organs. This can cause severe damage and illness. ...

Ulcerative colitis is a condition where the inner lining of your child’s large intestine (colon or bowel) and rectum gets inflamed. This inflammation often starts in the rectum and lower (sigmoid) intestine. Then it spreads to the whole colon. ...

Read more about Laila's story and struggle with HLH (hemophagocytic lymphohistiocytosis). Learn how the St. Louis Blues helped fuel Laila. ...

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 part of the heart doesn't develop as it should during the first 8 weeks of ...

Meningococcal infections are illnesses caused by bacteria. ...

A growth problem means that a child falls either below or above the average range of growth for a child's age, sex, family history, or racial background. ...

Marfan syndrome is a genetic disorder that affects the body's connective tissue. Connective tissue holds the body's cells, organs, and other tissue together. Connective tissue is also important in growth and development. ...

Influenza (flu) is a very contagious viral infection that affects the air passages of the lungs. It causes a high fever, body aches, a cough, and other symptoms. ...

What is cancer? Cancer is not just one disease. Rather, it’s a group of diseases, all of which cause cells in the body to change and grow out of control. Cancers are classified by the kind of fluid or tissue from which they come from. ...

Overview Achondroplasia is the most common type of rare genetic bone disorder. The strong, flexible tissue called cartilage is not made into bone as normal. This causes a series of signs, such as short arms and legs and a large head. This condition used to ...