Varicella Chickenpox. Varicella Chickenpox is caused by a virus of the
herpes group. The disease is highly contagious and is spread by droplet or
direct contact. The incubation period for chickenpox ranges from 11 to 21 days.
Prodromal symptoms consist of low-grade fever, headache, anorexia, and malaise.
On the following day, the characteristic rash begins to appear. The lesions
evolve from erythematous macules to form small papules. Quickly, a clear
vesicle arises on this erythematous base. The classic lesion of chickenpox has
been poetically described as a “dewdrop on a rose petal.” Over the next several
days, the vesicles rupture and then crust. The rash begins on the chest and
back and spreads centrifugally to involve the face, scalp, and the extremities.
New lesions of chickenpox arise in crops over a period of several days.
Color Atlas of Pediatric
Samuel Weinberg, Neil S. Prose, Leonard Kristal
Copyright 2008, 1998, 1990, 1975, by the McGraw-Hill Companies, Inc. All rights