Force Leprosy

Force Leprosy was a Dark-side Force disease. It corrupted the flesh of a being, and gave them the ability to stab deeply into the Dark side of the Force. However, it was extremely painful. It could allow a victim of the disease to be immortal should they choose, but most instead ended their lives with a wish because the agony was searing and everlasting. There was no known cure. Spread from a Killik-developed poison, instead of causing these things in a Killik, it caused them to be healed of any disease, injury, or pestilence, but after one use, they developed a severe allergy that would kill them if they would ever come in contact with it again.

Known sufferers

 * Darth Glume
 * Darth Sion
 * Darth Plageuis