The spinal cord is a bundle of nerves that carries messages between the brain and the rest of the body. It sends data from the brain to the body, and carries sensory information from the skin, bones, muscles, and organs back to the brain....

Overview Addison disease is when the adrenal glands don't make enough of two steroid hormones. The hormones are cortisol and aldosterone. Cortisol controls the body's metabolism, blocks inflammatory reactions, and affects the immune system. Aldosterone manages sodium and potassium levels. The adrenal glands sit on...

Adenoids are similar to the tonsils. The adenoids are made up of lymph tissue and are located in the space above the soft roof of the mouth (nasopharynx) and cannot be seen by looking in your child's nose or throat....

Overview Adenoviruses are a group of viruses that cause a variety of infections, such as: Respiratory illness, such as a cold Infection of the eye (conjunctivitis, also called pink eye) Croup Bronchiolitis Pneumonia In children, adenoviruses most often cause infections in the respiratory system, but...

An adjustment disorder is defined as an emotional or behavioral reaction to an identifiable stressful event or change in a person's life that is considered maladaptive or somehow not an expected healthy response to the event or change....

The Adolescent Center at St. Louis Children's Hospital was created to meet the complex, growing health care needs of adolescent patients (patients aged 12-21), who require general and specialized care that is tailored to their mental, physical and social development....

Whether you are interested in domestic adoption, international adoption, or in fostering a child, we are here to support you and your new addition to your family. We offer a variety of before and after adoption counseling and health assessments to help you and your...

Adrenal glands, which are also called suprarenal glands, are small, triangular glands located on top of both kidneys. An adrenal gland is made of two parts: the outer region, called the adrenal cortex, and the inner region, called the adrenal medulla. The adrenal glands work...

Agranulocytosis, also known as agranulosis or granulopenia, is a condition that occurs when the bone marrow (the soft tissue inside bones) fails to make enough white blood cells. This condition can cause a suppressed immune response to bacteria and other infections because white blood cells...

Alagille syndrome — also known as Alagille-Watson syndrome, syndromic bile duct paucity and arteriohepatic dysplasia — is a genetic disorder that affects the liver, heart and other systems of the body. The problems associated with Alagille syndrome usually become evident in infancy or early childhood....