Health Library

Urinary Tract Infection (UTI) in Children

A urinary tract infection (UTI) is inflammation of part of the system that takes urine out of the body. It's caused by bacteria.

Urticaria (Hives) in Children

Hives is a sudden outbreak of red, itchy, and swollen areas on the skin. It often happens as an allergic reaction from eating certain foods or taking certain medicines. Here's what you should know.

Varicoceles in Children

A varicocele is when veins in the scrotum have become large and swollen (dilated). The condition is like varicose veins that occur in the legs. Here's what you need to know.

Vascular Malformations and Hemangiomas

The term “birthmark” may be a misnomer. These usually harmless skin discolorations can appear any time in the first few months after birth. They’re generally nothing to worry about. But, in some cases, they may need treatment. Here are the most common birthmarks and what to do if they show up on your child.

Very Low Birth Weight

Very low birth weight is a term used to describe babies who are born weighing less than 3 pounds, 4 ounces. It is very rare that babies are born this tiny. Only about 1 in 100 babies born in the U.S. are very low birth weight.

Vesicoureteral Reflux (VUR) in Children

Vesicoureteral reflux (VUR) is a condition where urine in the bladder flows in the wrong direction. It goes up into the tubes (ureters) that lead to the kidneys.

Viral Skin Infections

Detailed information on viral skin infections, including Herpes Zoster (Shingles), Pityriasis Rosea, Warts, and Molluscum Contagiosum

Viruses, Bacteria, and Parasites in the Digestive Tract

Detailed information on viruses, bacteria, and parasites in the digestive tract.

Vision

Detailed information on children with vision problems

Vision and Hearing

Detailed information on vision and hearing in newborns

Vision Problems

Eye disorders in children are either refractive or nonrefractive errors. Refractive errors are caused by the shape of the eye. Nonrefractive errors are caused by disease.

Visual Screening and Eye Examinations

Detailed information on visual screening tests in children