The Most Insane Medical Practices in History

2. They practiced skull trephination.  

Headaches, epilepsy, and other psychological disorders used to be cured by drastic measures: doctors drilled holes in their patient’s skull. Trephination is the oldest surgical operation. Proof was also found in human remnants from the Neolithic age. This method was very popular in ancient American civilizations, as well as during the Renaissance era.