Hi there, Welcome to neuro talk it is a wonderful wealth of information but does take a bit of searching and reading. I have segmental spinal myoclonus so I jerk a lot, joke a lot and when all else fails... come up with a new job for myself if I lose the one I currently have due to missing work from my leg cramping up.. Job at top right now is grape smasher at a winery... hear they give employees free tastes of break LOL
God bless and good luck on your journey

well here is what I found under the medical dictionary at top of page.. there is also an article if you "google" disc desication that was just written on June 10, 2010 "Disc Desiccation: Cause & Treatment of Desiccated Discs" might be a good place to start on your journey to find out some answers.
Sorry not more help but I am not familiar with your disease
Main Entry: des·ic·ca·tion
Pronunciation: \ˌdes-i-ˈkā-shən\
Function: noun
: the act or process of desiccating or the state of being or becoming desiccated ; especially : a complete or nearly complete deprivation of moisture (as by vaporization or by evaporation) or of water not chemically combined : dehydration <from the long-wave diathermy machine two distinct currents are obtained which produce desiccation and electrocoagulation respectively—W. H. Schmidt>