The name chickenpox has been around for centuries, and there are a number of theories as to how it got its name. One is that it's from the blisters that are seen with the illness. These red spots — which are about 1/5 inch to 2/5 inch (5mm to 10mm) wide — were once thought to look like chickpeas (garbanzo beans).

What is the real name for chickenpox?

Chickenpox is very contagious. If one person has it, up to 90% of the people close to that person who are not immune will also become infected. Chickenpox can also be serious, even life-threatening, especially in babies, adolescents, adults, pregnant women and people with weakened immune systems.

Who discovered chickenpox?

However, the first description of chickenpox was provided by Giovanni Filippo in the 16th century. William Heberden demonstrated in 1767 that smallpox was different from chickenpox.