Hello,
There can also be internal/non visible scar tissue, some people get that after surgeries or even from injuries, it can be quite problematic. Can cause irritation to the nerves, lymph nodes and muscles.

you might want to read on our RSD/CRPS forum to see if your pain & symptoms fit. RSD can set in even after a minor injury, if pain lasts long after the normal time & spreads or increases RSD should be looked into.
http://neurotalk.psychcentral.com/forum21.html


How long ago was your burn injury?