I have DLE, diagnoised 2 years ago by skin biopsy.
My Medications are simply : Hydroxychloroquine 1 pill 2x daily. Which is mainly for the lupus itself it does help with the lesions from the DLE. I still on occasion get them but not as much. Plus a anti inflammatory Tolmetin Sodium and Pain Meds. Darvocet.
As far as the sun, get the strongest suncreen there is..SPF 30 or 60.
I dont wear long sleave shirts or cover up, but I do try to hide from the sun when its the strongest. Everyone is different so I cant really comment if this will help. And as far as the Predisone no, I am not on it, or has it been suggested.
If u have more questions about DLE email me, will be glad to answer or help If possible.
I Have It....And I Will Provide Answers!