Hi Garry,
Though of course as others point out, not every ailment can be CML or TKI related I do have some experience in this regard that was very much related.
A few years back, when I was diagnosed, I was put on imatinib and quickly got sever bone and nerve pain (Grade 3/4) down both legs, and to a much lesser extent arms too. It was really, really bad and the low point was not being able to make it to the gate at the airport and needing to use the airport assistance to pop me in a wheelchair and get me on the plane back home to see family.
My doctor wasn't convinced it was TKI related, but we agreed to stop taking imatinib for 2 weeks (as that is about how long it takes to flush out of your system) to see what happens. Lo and behold, things cleared up completely in that time. So, I started taking dasatinib instead and the problems never returned.
As I understand it, it's an unusual side effect of imatinib and I am very pleased there were more options available to me. Had imatinib been the only game in town I think I'd have had some serious thinking to do but thankfully didn't have to.
Now, bone pain is documented as a possible side effect of dasatinib so whilst I am not saying that it's causing your problems, and there may be other more likely and mundane causes, I wouldn't completely rule dasatinib out as a cause.
David.