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Nager Syndrome

A rare genetic condition causing physical abnormalities, most commonly in the face, hands, and arms. Small or missing thumbs are a usual feature of this syndrome.


A sleep condition affecting 1 in 2,000 people, characterized by inappropriate sleep patterns and excessive – at times irresistible – daytime sleepiness.

Nasal & Jaw Deformities

Genetic conditions resulting in malformations of the face, head and jaw, in some cases only cosmetic, in other cases affecting breathing, eating, hearing and vision.

Nasal Fracture (Broken Nose)

Possible signs of nasal fracture (broken nose) include bruising of the nose and under the eyes, nosebleeds after injury, swelling of the nose or a crooked appearance of the nose. Learn more.

Navicular Stress Fracture

An overuse injury of one of the bones in the midfoot, resulting from too much repetitive stress placed on a bone, causing swelling, weakening and cracking.

Neck Abscess

A mass of pus (yellowish-white fluid filled with dead white blood cells) from an infection that collects in spaces between the structures of the neck.

Necrotizing Enterocolitis

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.

Neonatal Hemochromatosis

A serious and usually fatal condition in which fetuses and infants under one month accumulate iron in the liver and other tissues, typically resulting in liver failure.

Neonatal Sepsis

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.


The Division of Neonatology at Lurie Children's Hospital has a top-ranked neonatal intensive care unit (NICU) for critically ill newborns.

Nephrology (Kidney Diseases)

The Division of Pediatric Nephrology at Lurie Children's provides top-ranked care for pediatric kidney diseases and kidney failure. Learn more here.


A group of symptoms affecting both kidneys, usually with no obvious cause, indicated by high albumin in the urine, high blood cholesterol and fluid retention throughout the body.