This lore can be found by a Consular on Tatooine.
The common Tatooine name for a condition seen on many desert worlds, Sand Rot is a sickness developed after spending long periods of time in the deep desert. Sufferers develop a distinctive cough and begin to lose feeling in their hands and fingers. Sand Rot is treatable, preferably by taking the sufferer offworld, but few on Tatooine can afford the expense. Many have wondered if Tatooine’s native Sand People can catch the Sand Rot, as they never leave the desert wastes. Although it is difficult to know for certain, some desert guides believe the Sand People’s distinctive masks and wrappings protect against the sickness and will pay good credits for intact garb.