I have RSD in my mouth, sinuses, eyes, and ears as well as the rest of my body. My mouth can get incredibly sore. One thing that helps me is taking the supplement L-Lysine (not regular Lysine) but that helps with soft tissue repair. It's cheap and I take about 4 a day when I'm in a flare. Also swishing with warm salt water. I'm sorry you are hurting.

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