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Health Library A to Z

V

  • Normal Vision
  • Light enters the eye through the cornea and passes through the pupil. It then hits the lens, which focuses the light rays on the retina. The optic nerve carries the image from the retina to the brain.

  • Problems with Vision
  • Eye disorders in children are either refractive or non-refractive errors. Refractive errors are those caused by the shape of the eye. Non-refractive errors are caused by disease.

  • Vaginitis in Adolescents
  • Vaginitis is a common problem for women of all ages. Bacteria, yeast, viruses, and chemicals in creams or sprays can cause it.

  • Varicella (Chickenpox)
  • Chickenpox is a very common childhood disease. It is usually mild, but can be serious, especially in young infants and adults.

  • Varicella and Pregnancy
  • Did you have chickenpox as a child? Then you’ve got nothing to worry about from varicella. But if you didn’t, you may not be immune to this infectious disease that can cause complications for a pregnant woman and her baby. Read more to find out why and how to protect yourself.

  • Vasculitis
  • Detailed information on the most common types of vasculitis, including Kawasaki Disease and Henoch-Schönlein Purpura

  • Vegetarian Kids
  • Most nutrition experts and dietitians say that children of any age -- even infants -- can safely follow a vegetarian diet, according to the Nemours Foundation. But some planning is involved to ensure that children receive the proper nutrients, especially if their diet does not include eggs and dairy products.

  • Ventricular Septal Defect (VSD)
  • A ventricular septal defect is an opening in the dividing wall between the two lower chambers of the heart known as the right and left ventricles.

  • Very Low Birthweight
  • Very low birthweight is a term used to describe babies who are born weighing less than 3 pounds, 4 ounces. Only a few babies are born this tiny.

  • Video Games: More Losers than Winners
  • Video games can take up too much of your kids' time. They may keep your kids from schoolwork and isolate them from family and friends. They can fuel obesity by limiting physical activity.

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

  • Vision
  • Detailed information on children with vision problems

  • Vulvitis in Teens
  • Vulvitis is an inflammation of the vulva, the soft folds of skin outside the vagina. It is a symptom of a host of diseases, infections, injuries, and allergies.