
Blister Beetles: The Application of Blisters to Treat Various Illnesses
Blistering agents are substances that are applied to the skin to cause a blister, which was believed to help treat various illnesses in the past. The practice of blistering, also known as vesiculation or vesicant therapy, dates back to ancient times, and it was used to treat a wide variety of conditions, including pneumonia, tuberculosis, and rheumatism. The application of blistering agents involves the use of substances such as cantharidin, which is derived from the blister beetle, or mustard oil, which is obtained from the seeds of the mustard plant.

The blistering agent is applied to the skin, causing a blister to form within a few hours. The blister is then drained, and the area is dressed with a bandage. While blistering was believed to be a beneficial treatment in the past, it is now considered to be a dangerous and outdated practice. Blisters can lead to infection, scarring, and other complications, and there is little evidence to support the use of blistering agents in treating illnesses.