Multiple neurologic complications may follow the reactivation of varicella-zoster virus (VZV), including herpes zoster (also known as zoster or shingles), postherpetic neuralgia, vasculopathy, myelitis, necrotizing retinitis, and zoster sine herpete (pain without rash). These conditions can be difficult to recognize, especially as several can occur without rash.
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Nagel et al. (2007) studied this question.
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