"Shingles" redirects here, for other uses of the term, see
Shingle. Herpes zoster, colloquially known as shingles, is the reactivation of
varicella zoster virus, or VZV. The virus, one of the
Herpesviridae group, leads to a group of painful
blisters over the area of a
dermatome. After an attack of
chicken pox, the varicella-zoster virus retreats to nerve cells within the
ganglion or the
spinal cord, where it will lie dormant for several months up to several decades. Aging, stress, or disease will cause the varicella zoster virus to reactivate and reproduce, at which point it is known as herpes zoster. Once activated, the herpes zoster virus travels along the path of a nerve to the skin's surface, where it causes shingles.
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