Mark,
I also wanted to add here: with the mouth/ throat allodynia I have found lyrica helpful. I was already on neurontin when the RSD spread to my mouth/ throat, and was still having a lot of problems with the allodynia. Then I was started on lyrica and it has made me feel somewhat better. I know everyone is different, and different things help different people, but this is just my experience.
Also, I have found COLD helps with my mouth/ throat (ice cream

, ice, water ice...) and so does menthol (like in cough drops).
HTH!