Human Disease
Primary VZV infection results in chickenpox (varicella), which may rarely result in complications including encephalitis or pneumonia. Even when clinical symptoms of chickenpox have resolved, VZV remains dormant in the nervous system of the infected person (virus latency), in the trigeminal and dorsal root ganglia. In about 10–20% of cases, VZV reactivates later in life producing a disease known as shingles or herpes zoster. VZV is more likely to reactivate in patients with severely compromised immune systems, such as AIDS patients. Serious complications of shingles include postherpetic neuralgia, zoster multiplex, myelitis, herpes ophthalmicus, or zoster sine herpete. Ramsay Hunt syndrome; VZV rarely effects the geniculate ganglion giving lesions that follow specific branches of the facial nerve. Symptoms may include painful blisters on the tongue and ear along with one sided facial weakness and hearing loss.
Read more about this topic: Varicella Zoster Virus
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