Hi James,
I didn't see anything that specifically mentions the symptoms you talk about but here is some information you might find useful.
If you want to learn more about chronic pain and what some of the conditions and causes are you can look in the over view here database located here. There is a good video there. Then you can check symptoms here in the symptom checker. There is a very informational section here about pain management and you can check commonly prescribed medications here. Lastly there are some great resources on the web that Health Central lists here.
I hope you find something here that helps you. Online resources are great for gathering the information needed to ask all the right questions when it's time to talk to the doctor, but they should never be used in place of a doctor's care and advice.
Take care and stay in touch!Vicki M