Kawasaki disease is a rare condition mostly affecting children. It causes fever and inflammation of the blood vessels, but most kids recover without long-term problems.
Other questions about the COVID-19 coronavirus
Answers to common questions about COVID-19, including whether you should bulk-buy groceries and which types of public venue have closed.
Elephantiasis is a tropical disease spread by mosquito bites that can cause arms and legs to swell and the skin to become hard and thick, like an elephant.