Yours looks like mine. My white lacy patches are on sides of cheeks and under tongue , both sides. Plaquinil takes a long time to work. I am on 400 mg per day and have been for 5 months. It has helped me feel better. More energy and feel I can deal and adjust to new life with this. I also use Cleure toothpaste during day and Biotene toothpaste ate night. I got toothpaste on Amazon. I use a compounded steroid Clobetasol /Cyclosporin/ Lidocaine and Nystatin only for break out. Prescribed by a general Derm through Bedrock Pharmacy. . This is a Derm compounding pharmacy in Tampa. Rinse mouth after eating. Keep trying until you find a Dr that treats this. I am going to Mayo next week for consult. 20 drs later.