A phobia is an excessive fear of a certain object or situation. It's a fear that lasts for at least 6 months. It is a type of anxiety disorder. Here's what you need to know.

Children with congenital heart disease often grow and develop more slowly than other children. Here's what you should know.

A detailed look at the way children may feel about having congenital heart disease, plus some tips for helping them cope.

Aortic stenosis means that your child has a heart valve that is too narrow or is blocked.  The aortic valve is 1 of 4 heart valves that keep blood flowing through the heart. The valves make sure blood flows in only one direction. The aortic valve keeps blood flowing from the left ventricle to the aorta.

Warts on the skin are harmless growths. They are caused by a virus. Warts can spread to other parts of the body and to other people.

Poison ivy rash is an allergic reaction to poison ivy. Poison ivy is very a common plant in the U.S. It is similar to two other plants called poison oak and poison sumac. The plants cause allergic dermatitis.

Impetigo is a skin infection. When it affects just the surface, it’s called superficial impetigo. Impetigo can also affect deeper parts of the skin. This is called ecthyma. It may occur on healthy skin. Or it may occur where the skin was injured by a cut, scrape, or insect bite.

Fifth disease is a viral illness that causes a rash. It occurs most often in the winter and spring.

Diaper dermatitis is inflammation of the skin in the diaper area. It’s a very common condition in babies and toddlers.

Cradle cap (infant seborrheic dermatitis) is scaly patches on a baby's scalp. Cradle cap isn’t serious, but it can cause thick crusting and white or yellow scales. Some babies can also have seborrheic dermatitis in the diaper area, and on the face, neck, and trunk. Cradle cap usually clears up within the first year.