Herpes zoster
Herpes zoster Definition Herpes zoster is also called as shingles. It is a Greek word herpein meaning to creep, and zoster meaning girdle or belt. It is an acute viral infection mainly affecting the skin and nerves, manifested by small blisters appearing along the important nerve segments. Herpes zoster is caused by the same virus as that of chicken pox; it probably constitutes the response of the partially immune person, resulting from the reactivation of a latent varicella-zoster virus, whereas chicken pox is the response of the non-immune host. Herpes zoster is contagious if blisters have burst and the person with whom the virus comes into contact has not been previously affected by chicken pox (a contagious spread causes chicken pox rather than herpes zoster). Pathophysiology VZV is certainly transmissible through the airborne route, but not with any close personal contact. The virus is thought to gain entry via the respiratory tract and spreads shortly afte...
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