Suzanne, although Will made mention of Fentanyl you didn't bring it up. I found that in the late stages of my RT even the Oxy I was taking didn't do the trick, so my doc prescribed a Fentanyl patch concurrently. You may have explored this but if not I recommend it. Hang in there! Things are going to get better.

David 2
SCC of occult origin 1/09 (age 55)| Stage III TXN1M0 | HPV 16+, non-smoker, moderate drinker | Modified radical neck dissection 3/09 | 31 days IMRT finished 6/09 | Hit 15 years all clear in 6/24 | Radiation Fibrosis Syndrome kicked in a few years after treatment and has been progressing since | Prostate cancer diagnosis 10/18