This is a picture of herpes zoster (shingles) on the hand and fingers. Shingles are caused by the same virus that causes chickenpox. Outbreaks of shingles often follow the distribution of nerves in the skin. This distribution pattern is called a dermatome.
Update Date 3/5/2014
Updated by: David Zieve, MD, MHA, Isla Ogilvie, PhD, and the A.D.A.M. Editorial team.