I Have Had A Biopsy To Verify That I Have

I have had a biopsy to verify that I have Lichen Planus. Is it possible that my blood pressure medicine is a contributing factor? I am on Norvasc. I have had two courses of prednisone which helped very much but I know I can't continue doing that treatment. Currently my skin is as bad as it's ever been. I had the first lesions show up about 14 months ago now.
Thank you!