I was diagnosed with tonsil cancer which had spread to the lymph nodes in my neck. I had chemoradiotherapy and nearly 2 years on I am still suffering with my mouth. I have persistent ulcers which the hospital dentist has said that it's "highly likely" I will develop osteoronecrosis. I can't get through the day without xylocaine spray. The pain team have put me gabapentin 3600mg a day and duloxetine 60mg am 30mg pm. It is still too sore to eat without numbing my mouth first. When will the pain go away. I'm so fed up now