I need a straight answer. What is chickenpox?

Viral illness. Chickenpox is a rash and fever caused by the varicella virus, usually in children - although it is far less common now that most kids are vaccinated against it. The same identical virus causes shingles in adults.
A viral illness. Chicken pox is a viral illness that results in not only a rash but other symptoms such as fever. It is an infection with varicella. There is a vaccine that can be given to prevent varicella infection. If you haven't had chicken pox you should ask your doctor if this vaccine would be appropriate for you.