the fingernails short to decrease injury from scratching, and the use of paracetamol (acetaminophen) to help with fevers. For those at increased risk of complications, antiviral medication such as aciclovir is recommended.

Chickenpox occurs in all parts of the world. In 2013, there were 140 million cases of chickenpox and shingles worldwide. Before routine immunization the number of cases occurring each year was similar