I have the same question. My discoid lesions are driving me nuts. I guess no one has any solutions so far?
I actually have psoriasis too, sometimes in the same area as the discoid, mostly on my scalp. It's been getter redder, more pronounced, and growing fast. It's soo gross :(
Some people with psoriasis recommend using glycerin. I tried it and it seems to work on the P but not on the lupus. You could try luxiq or olux (steroid in foam form) but it is super strong and will most likely thin out your skin.
I only ever had success using methotrexate, but that did some things to my liver and I had to come off it. I'm also on Prednisone, but since tapering, my skin is getting more "angry."
Did you find that any medications worked for you?