I found it really hard to explain it to my friends/family. Well, mostly friends. They just really didn't understand it when I would explain it to them. Lupus is a tough thing to explain to people who don't have it. I ended up going on google and looking for ways to communicate what its like and found this: The Spoon Theory. I just got the people I wanted to understand my condition to read it, and they seemed to have a better understanding. =]
As for the employer thing, I don't know what to tell you for that. It may be a good idea just to let them know if you do get diagnosed with it.
Medications: CellCept, Plaquenil, Prednisone, Naproxen, Tramacet