--though I'm sorry for the issues that bring you here; spinal problems are never nice, and rarely simple.

It is trure that problems in the cervical spine can cause symptoms at any level at or below the level that the problem stems from, so yes, cervical issues can be felt as far down as you indicate (and even farther down into the legs and feet, depending on what nerve tracts are involved). Some doctors, unfortunately, only think upper body when cervical issues manifest.

Extensive testing may well be necessary; many neural dysfunctions that have the exact same symptoms or presentation can stem from problems in many different parts of the body; the testing is often long (and expensive) in an attempt to do process of elimination.

Feel free to post on our Spinal Disorders forum, where there are numerous knowledgable people:

http://neurotalk.psychcentral.com/forum22.html