1. Varicella pneumonia commonly develops in adults without prior immunity. 2. Characteristic symptoms include fever, rash, and respiratory distress. 3. Imaging can reveal pulmonary infiltrates. 4. Early IV acyclovir improves recovery. 5. 71% of adults with varicella show pneumonia on imaging. 6. Steroids not routinely recommended. 7. Confirmatory tests may take 24-48 hours. 8. Importance of timely diagnosis and treatment emphasized.