Examples of common viral rashes in children include chickenpox, roseola, warts and hand-foot-mouth disease, according to WebMD. Common rashes in children that are not viral in nature include hives, eczema and contact dermatitis.
The chickenpox rash is highly contagious and spreads across the body easily, explains WebMD. It forms itchy red bumps and blisters that go through phases. They start out as a blister, burst, dry out and scab over. This rash has the potential to be very serious. However, due to vaccines, chickenpox is less common in children, as of 2015.
Warts are usually painless growths on the skin that commonly occur on the hands and fingers, notes WebMD. Warts are also contagious, and they spread by contact with an afflicted person or contact with something an afflicted person touched. To keep warts from spreading, children must avoid picking them. The warts should be covered with bandages.
Roseola is a mild illness that most commonly affects children from the ages of six months to two years. It starts as a cold with a fever and ends with a rash of small pink bumps that are slightly raised, says WebMD. The rash appears on the chest and back first, and then spreads to the hands and feet.