With liquid nitrogen, a blister may form at the treatment site, but it will slough off in two to four weeks.

About one year later, the person develops a painful burning feeling as the female worm forms a blister in the skin, usually on the lower limb.

It should not be. Until one of my colleagues said, It looks to me like a thermal blister, and the mid ocean ridge must be a cooling curve. We said, Let's go find out.

And do you get along? I certainly hope so, because at some point or another on this expedition, one of your teammates is going to have to take a very big needle, and put it in an infected blister, and drain it for you.