Greetings.
This is very likely to be development of allergic reaction to the Duragesic patch. I am afraid, the only treatment is to stop them and stop alternate analgesic patch. The reaction to Duragesic patch does not point to rheumatoid arthritis. There are some anti-inflammatory analgesic patch available (like indomethacin), which you can use with the advice of your physician.
Please feel free for your follow up questions.
Dr. Arun
Doctor (MD)
MBBS, MS (General Surgery), Post-doctoral Fellowship in Sports Medicine