Blister

An agent producing a vesicle containing serum; usually a blistering fluid or a plaster (cantharides). The nurse generally is entrusted to apply the blister; the part must first be washed with soap and warm water, and the plaster fastened lightly with two narrow strips of strapping; or, if fluid is used, outline the spot with olive oil to prevent the fluid spreading; paint on with a camel’s hair brush. A blister takes from six to twelve hours to rise. To dre , snip the most pendent part of the bleb, and let the serum run out into a receiver, or a bunch of absorbent wool. Apply the dre ing ordered.