For the past 2 years, I have been treated with Prednisone, Imuran/CellCept, and finally Rituximab for my Pemphigus Vulgaris. My Prednisone dosage has been reduced to 5 mg/day. Although I have no new lesions on my body/mouth for the last 12 months, my mucous membrane mouth peel has never healed. My bad breath is persistent. What can I do?