Hi! So in the podcast found below, I made a mistake about blister plastering. What I was thinking of was a form of cupping, which when overdone can cause horrible blisters. I do apologize. According to the following website Medicine-in-Jacksonian America (http://tinyurl.com/983uqhc) blister plastering is: “The application of blister plasters was another way of cleansing... Read more.