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Shingles, also known as zoster, herpes zoster, or zona, is a viral disease characterized by a painful skin rash with blisters involving a limited area.[1][2] Typically the rash occurs on either the left or right of the body or face in a single stripe. Two to four days before the rash occurs there may be pain or tingling in the area. Otherwise there are typically few symptoms.[3] The rash usually heals within two to four weeks;[1] however, some people develop ongoing nerve pain which may last for months or years, a condition called postherpetic neuralgia. In those with poor immune function the rash may occur widely.[3] If the rash involves the eye, vision loss may occur.[1]
