Browse Alphabetically

Athlete Burnout

A condition in which an athlete experiences fatigue and declining performance in his/her sport despite continuing or increased training.

Atrial Septal Defect

An opening between the heart's two upper chambers, which lets some blood from the left atrium return to the right atrium instead of flowing to the body.

Atrioventricular Canal

When the common valve between the upper and lower chambers doesn't close properly, allowing blood to leak backward from the heart's lower chambers to the upper ones.

Attention Deficit Disorder (ADD)

A type of ADHD not combined with extreme physical activity, characterized by a lack of working memory, language problems, slow reaction times, low motivation, boredom, and low arousal.

Attention Deficit Hyperactive Disorder (ADHD)

A condition used to describe children, adolescents and some adults who are inattentive, easily distracted, hyperactive and impulsive in their behavior.

Atypical Genitalia (Differences of Sex Development)

A fetus may develop along a path that is not the typical one for a boy or a girl. When sex development follows a less common path, the result is a difference of sex development.

Atypical Hemolytic Uremic Syndrome

An extremely rare disease causing clots in the blood vessels of the kidneys, which can restrict blood flow causing kidney damage and ultimately kidney failure.


The certified pediatric audiologists at Lurie Children's specialize in early diagnosis and care for children who are hard of hearing.

Aural (Re)Habilitation Therapy Program

Lurie Children's Aural (Re)Habilitation Therapy Program therapists specialize in helping children with hearing loss maximize the benefit they receive from their hearing aids or cochlear implants.


A neurological and developmental disorder appearing during the first three years of life that affects communication, social interaction, and creative or imaginative play.

Autism Spectrum Disorder

A range of symptoms, skills, and disability levels, including Asperger syndrome, childhood disintegrative disorder, and pervasive developmental disorders not otherwise specified (PDD-NOS).

Autoimmune Disorders of the Brain & Peripheral Nervous System

Disorders occurring when the body’s immune system attacks the brain, spinal cord and/or the nerves of the trunk, arms and legs, causing them to lose the ability to transmit signals.

Awards & Accolades

Lurie Children's is proud to be recognized for the following awards, accolades and achievements.

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