DYK: Malaria was used as a cure for Syphillis

For a brief time malaria was used as treatment for tertiary syphilis because it produced prolonged and high fevers (a form of pyrotherapy). This was considered an acceptable risk because the malaria could later be treated with quinine, which was available at that time. This discovery was championed by Julius Wagner-Jauregg, who won the 1927 Nobel Prize for Medicine for his work in this area.