Unthinking citizens would accidentally pass through wraith haunted grounds, becoming infected with the Ghost Fester. At first it was just a small patch of dry skin that would appear in a week of contact with a wraith, then after a month the infected skin would spread, causing it to crack, peel, and bleed with no cure from known ointments. The infected would infect others from physical contact with the affected flesh. After four months patients seemingly fall apart into a bloody mess, scratching incessantly at the wounds. Those infected with the Ghost Fester were known to be Unhallowed, unholy and wicked demons sent to patronize the good citizens of Sudros. Fear spread faster than the disease and out of terror Sudrosi placed innocent and infected citizens into pits and set them on the fire, the only way they knew how to stop the disease. From this horror, any Sudrosi that lived was known as Unhallowed.
Those that were around Ghost Fester, even without having the disease, had a change in their skin and fur color. It became a far lighter hue and it helped cause some of the confusion of who had the disease and who didn't. It was also a 50/50 on whether or not those with the disease even had a change in fur tone. Those that still had their darker fur, or were born after the Unhallowed Age with a darker fur were known as Divine. They became thought of as blessed by the Gods and Goddesses. Only the Divine are allowed within the Holy Imperium, although they permit Unhallowed to be Celdain.
