This document discusses Varicella-Zoster virus infections, including chickenpox and shingles. It provides details on the virus, clinical manifestations, diagnosis, treatment and complications. Some key points: - Varicella-zoster virus causes chickenpox during primary infection and can reactivate later in life as shingles. - Chickenpox presents as a fever and itchy rash that crops up in successive groups. Shingles occurs in a dermatomal distribution. - Diagnosis is usually clinical but virus can be detected via PCR or serology. - Treatment of uncomplicated cases is usually supportive care but antivirals like acyclovir are used for severe