Your body has tiny tubes called blood vessels that carry blood everywhere, kind of like a water pipe system.

Sometimes, in a rare condition called Kawasaki disease, those vessels get swollen and inflamed. The body heats up with a fever that lasts more than 5 days.

Kids with Kawasaki disease might also have red or pink eyes, a red or cracked tongue, and swollen hands or feet. It sounds scary, but doctors know how to treat it and help kids feel better soon.