Chickenpox is a mild but highly infectious condition caused by a virus called the varicella-zoster virus (varicella is the medical name for chickenpox). It causes an itchy rash that blisters and then crusts over. There is no cure for chickenpox, and the virus usually clears up by itself without any treatment. However, there are some steps you can take to ease the symptoms. Children usually do not need to consult a Doctor.
Itching may be eased a little by calamine lotion and cool baths.
The most infectious period is from 2 or 3 days before the rash appears until the last spots have scabbed over. Children may then return to school.
Chicken pox in adults however, can be a more serious infection