A form of chronic lung disease, affecting most infants who are born more than 10 weeks before their due dates and weigh less than two pounds.

A weak or thin spot on a blood vessel in the brain that balloons out and fills with blood; can occur anywhere in the brain; more common in adults than in children.

Death or long-term disability possibly caused by lack of blood flow or oxygen before, during or after birth, from a ruptured uterus, bleeding from the placenta, or cord accidents.

A condition that occurs when a yet-to-be-born baby breathes in a mixture of meconium and amniotic fluid, blocking airways, causing breathing difficulty, irritation, and infection.

A serious intestinal illness in babies, involving damage to intestinal tissues, which can lead to a hole in the intestines, allowing bacteria in the intestine to leak into the abdomen.

A blood infection common in preterm, low-birth-weight babies, can be caused by bacteria or virus, commonly Group B streptococcus but most dangerously by E. coli.

Also called persistent pulmonary hypertension in the newborn or persistent fetal circulation syndrome, a serious breathing condition for newborns. Its cause is unknown.

A build-up of fluid due to damage to blood vessels within the brain during the birth process and afterward.

Also called Hyaline Membrane Disease, a condition of premature infant lungs due to insufficient surfactant, a substance in the lungs that helps the air sacs stay open.