The Grey Plague

The Grey Plague is the swift, lethal form of greyscale, a disease that calcifies and kills its victims within days, and its outbreak in the Yunkish siege camps outside Meereen—carried by refugees from fallen Astapor—becomes a decisive factor in the war, spreading terror and death faster than any army.

Nature and Symptoms

The Grey Plague is the swift, mortal form of greyscale, a disease that begins with a tingling in the extremities, a blackening nail, and a loss of feeling. As the numbness creeps inward, the flesh stiffens and turns grey, resembling stone. In its final stages, the curse turns inward to muscles, bones, and inner organs, and blindness is common when the stone reaches the face. Unlike the common form of greyscale, which leaves its young victims disfigured but alive, the Grey Plague kills within days. Tyrion Lannister, who has read extensively on the subject, notes that maesters and septons agree that children marked by common greyscale can never be touched by the rarer mortal form, nor by its terrible swift cousin, the Grey Plague. The disease is said to be caused by damp and foul humors in the air, though the people of the Rhoyne believe it to be Garin's Curse, a supernatural affliction visited upon the conquerors who drowned the river prince.

The Shrouded Lord and the Stone Men

The Grey Plague is inextricably linked to the Sorrows, a stretch of the Rhoyne where the drowned city of Chroyane festers in perpetual fog. There, the mortal form of greyscale transforms its victims into stone men, clumsy, lumbering, withered creatures who go mad near the end and become dangerous. The Shrouded Lord, a legendary figure who rules these mists, is said to be the most proud of the stone men. Some claim he is Garin himself, risen from his watery grave, while others say he is a corsair from the Basilisk Islands who took the place of a previous Shrouded Lord. The stone men on the Bridge of Dream wail at passing boats, and their touch can transmit the disease. Tyrion Lannister, after being dragged into the river by a stone man, is forced to prick his toes and fingers with a knife to check for the telltale numbness, and is warned that he may be going grey from inside out, starting with his heart and lungs, and that pricking his toes and bathing in vinegar will not save him if that is the case.

Outbreak in the Siege Camps

The Grey Plague, often called the pale mare, sweeps through the Yunkish siege camps outside Meereen with devastating effect. It is carried by refugees from Astapor, who have been driven north by the Yunkai'i and their sellswords. The disease spreads rapidly, killing three men of every four in Astapor before the city falls. In the Yunkish camps, the pale mare gallops through the siege lines, and the Yunkishmen are forced to burn their dead. The disease also spreads within Meereen itself, despite the queen's efforts to keep the Astapori outside the walls. The Blue Graces and healers sent to help the refugees sicken as well, and the disease proves unstoppable. The Yunkish supreme commander, Yurkhaz zo Yunzak, dies of the flux, and the leadership of the siege becomes chaotic. The disease becomes a strategic factor, weakening the besiegers as much as the besieged.

Consequences and Significance

The Grey Plague's outbreak fundamentally alters the military and political landscape of Slaver's Bay. It decimates the Yunkish forces, killing their supreme commander and spreading terror through their ranks. The disease also weakens the Meereenese, forcing Daenerys Targaryen to make difficult choices about who to let into the city. The plague becomes a symbol of the chaos and suffering unleashed by the war, a force more relentless than any army. It also serves as a narrative device, bringing characters like Tyrion Lannister and Jorah Mormont into contact with the disease and forcing them to confront their own mortality. The Grey Plague is not merely a plot device but a manifestation of the decay and death that permeate the world of the novel, a reminder that even the most powerful armies can be undone by forces beyond their control.