The bloody flux, also known as the "Pale Mare", is a disease that spreads easily. Its symptoms are fever, intestinal hemorrhages, and diarrhea. See also Medicine.
- A Clash of Kings
- A Dance with Dragons
The Bloody flux spreads through Meereen and the Yunkai army besieging it. The disease was brought over by a dying Astapori rider atop a pale mare. Because of the rider's mount, the plague became known as the Pale Mare among the Yunkish armies as well as the Meereenese.