Herpes zoster in a 7-month-old infant: a case report and review.

Herpes zoster (HZ) is a cutaneous viral infection of the skin that presents in a dermatomal distribution. It represents reactivation of herpes varicella zoster virus that has continued to exist in a latent form in the neurons of the posterior root ganglia. Although it is rare to see HZ in children, cases have been reported after exposure to varicella zoster in utero or during the first months of life. We present a case of HZ in a healthy 7-month-old girl who had had chickenpox at age 4 months.