Choking Death

The Choking Death is a terrible respiratory disease that spread westward from Iobaria in Casmaron throughout most of Avistan in 2742 AR. The disease is said to have killed nearly three-quarters of Iobaria's inhabitants, leaving many of its cities completely abandoned in its wake, and leading to a near total collapse of the nation. Even though it eventually burned itself out, the disease continues to exist in small pockets in Iobaria to the present day, keeping the region's population low.