How is varicella-zoster virus (VZV) infection diagnosed?
Diagnosis of Varicella Zoster Virus (VZV) Typical clinical presentation of pus-filled vesicles, rash or blisters and fever is confirmed by • Tzanck smar or culture of vesicular fluid • DNA analysis • Sequence analysis • MRI, when encephalitis or myelitis is suspected • Lumbar puncture, when encephalitis or myelitis is suspected