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Chronic Bronchitis What is chronic bronchitis? Bronchitis is inflammation of the breathing tubes. These are the airways called bronchi. This inflammation causes too much mucus to be made and other changes. Bronchitis can be acute (short-term) or chronic (long-term). Chronic

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

Marfan Syndrome in Children What is Marfan syndrome in children? 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

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

Hypoglycemia in Children What is hypoglycemia in children? Hypoglycemia is when the level of sugar (glucose) in the blood is too low. Glucose is the main source of fuel for the brain and the body. The normal range of blood glucose is about 70 to 140 milligrams per deciliter (mg

Phenylketonuria (PKU) in Children What is phenylketonuria (PKU) in children? Phenylketonuria (PKU) is a rare metabolic disorder. Children with PKU can’t process an amino acid called phenylalanine. Phenylalanine is in many common foods. It helps the body make protein. It's also

Conjunctivitis in Children What is conjunctivitis in children? Conjunctivitis is an inflammation of the conjunctiva of the eye. The conjunctiva is the membrane that lines the inside of the eyelids and covers the eye. Conjunctivitis is also known as “pink eye” because the eye

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

About Cancer Clinical Trials What are cancer clinical trials? Cancer clinical trials are research studies with people. They may be done by government agencies, educational organizations, private not-for-profit groups, or commercial businesses. Trials are used to check how safe

Graves Disease in Children What is Graves disease in children? Graves disease is an autoimmune disease. The immune system normally protects the body from infection and disease with proteins called antibodies. But with an autoimmune disease, the antibodies attack the body's own