Until you can get a diagnosis, I would think even temporary help to control the oral itching and pain…I have recipe I got from a chemotherapy nurse called Mary’s manic mouth wash. There may be a recipe for it on line. It addresses possible yeast infection of the mouth which can be brought on by stress of trauma and antibiotic treatment, depending how your trauma was treated. NYSTATIN, BENEDRY and steroid. I have the recipe and I’ll see if I can just write it down. A compounding pharmacy can mix it up. And you need a doctor or nurse practitioner prescription.