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kidshealth library

health & safety topics

Your child's health and safety is our top priority. Please search our resource library for information on health, nutrition, fitness, injury prevention and other important topics.

U

A to Z: Ulcerative Colitis

Learn more about this inflammatory disease of the large intestine, or colon.

A to Z: Umbilical Granuloma

Learn about disorders related to the umbilical cord and issues that affect newborn babies.

A to Z: Undescended Testicle

Undescended testis is a condition in which one or both of a boy's testicles (testes) have not moved into their proper place in the scrotum.

A to Z: Upper Respiratory Infection

An upper respiratory infection (URI) can be caused by many viruses or bacteria. The common cold, croup, and sinusitis are all URIs.

A to Z: Ureterocele

Ureteroceles are caused by a birth defect in which the opening in the ureter is too small for urine to pass freely into the bladder.

A to Z: Ureteropelvic (UP) Junction Obstruction

Ureteropelvic junction obstruction is a partial or total blockage of the flow of urine in the area where a ureter attaches to a kidney.

A to Z: Urinary Tract Infection (UTI)

Learn about bacterial infections and conditions that can affect the urinary tract.

A to Z: Urticaria (Hives)

Learn about urticaria, the red raised bumps or welts on the skin that are commonly called hives.

A to Z: Uveitis

Learn more about conditions of the eyes and factors that may contribute to vision loss.

A to Z: Uveitis, Anterior

Learn more about conditions of the eyes and factors that may contribute to vision loss.