Undiagnosed Abdominal & Side Pain

[abdsufferer]

I had a Kidney stone out of the blue one day, and had ESWL lithotripsy to break it up after 3 weeks of trying to pass it on my own. After that passed, I thought my battle was over but I continued to have abdominal pain. I had several KUB X-rays, urine studies, and IVPs performed and the urologist sent me back to my PCP for diagnostic testing.
       Over several months, I had a gallbladder ultrasound (clear), a colonoscopy (normal), a EDG (gastritis), and a CAT scan with contrast (normal). With nothing to explain the pain, I had a biliary nuclear dye study performed which didn't show my gallbladder until I was injected with morphine. I had the gallbladder removed, and the abdominal pain persisted. The pathology on the bladder did show inflammation that was also confirmed by the surgeon having to "peal" it off of my intestines.
         Now that it is gone, I'm still having the unexplained abdominal pain. The pain is basically all upper right quadrant pain, but I also have it radiating into my back and down my side. I'm visiting a GI specialist, but all of the IBS medication he gives me doesn't do a thing (I don't have IBS). I've repeated several tests (blood, edg) and had a full general abdominal ultrasound which came back normal. My GI doctor is trying to see if I have a sphincter of oddi (SOD) issue, but none of my blood works suggests a dysfunction (I'd be type III if I had it).
            The few symptoms that no one can explain (beyond the unexplained abdominal/side/back pain) is a constant itching feeling and swelling in my hands. The itching was actually the first symptom I had (even before the kidney stone), and was told it was dermographism (but I dont welt up like those I've seen online).
         Anyone heard of anything close to this? The medical community and I are at a total loss. This has been plaguing me for over a year now.

Thanks!