Chickenpox is a contagious disease that has a rash, and the rash appears in a certain order. This sequence can be summarized as first appearing on the trunk and then spreading to the extremities. The rash appears in batches, more on the trunk than on the extremities. In very few cases of chickenpox, the rash reaches the palms of the hands and feet, and in most cases it is confined to the skin outside the palms of the hands and feet. The chickenpox rash may initially appear on the trunk, or on the head, face, and neck, with the trunk mainly referring to the chest, back, and lower back. The rash takes the form of red papules, which are short-lived and quickly turn into herpes and are accompanied by itching. After the rash of chickenpox appears in batches, the previous rash evolves and the herpes breaks and crusts. So by the time a new batch of rash appears, the previously appearing rash has probably turned into a scab, or even the scab has fallen off.