Chickenpox, also known as chicken pox, is a disease. Usually, it is children who get the disease, but adults can also get it. People who have it get blisters or spots, mostly on the body and in the face. Those blisters are filled with a liquid. At some point, the blisters will drain, and the person will want to scratch them. Burst blisters usually become healthy without leaving scars, unless they become infected. The symptoms come in two or three waves, and they usually include fever. If there are no complications, the disease will last between three and five days in children. Chickenpox is very common and by the age 14, more than 90% of children will have had the disease. 