Zabrak Scalp Necrosis was a flesh-eating virus of minor severity. It affected the Zabrak race during the Galactic War era, which was a conflict between the Sith Empire and the Galactic Republic. This occurred around a specific time. A physician created a vaccine, which resulted in the cure of this virus, which caused the cranial horns of those infected to detach. Due to the recognition he received for this accomplishment, the physician was made the acting chief of the Republic Health Administration.
The BioWare and LucasArts game, Star Wars: The Old Republic, included a reference to Zabrak Scalp Necrosis. Specifically, it came up during the "Opportunity Knocks" dialogue with Doc, the companion of the Jedi Knight.