I'm wondering. From severe muscle wasting in '07, I come into my PCS already engaging in strenuous stretching exercises of all my neck muscles--watch out for these obscure names, but to identify, we're talking stuff like scalene, sternocleiodomastoid, longus colli, and others. There are no abrupt movements or shaking; but I'm twisting, turning, bending forward, just about every movement possible with the head and neck, as far as I can go, with all my might (and it usually hurts, but it seems I have to do it to get these damn things back to their original length.)

Is there any chance I could disturb my brainstem? After my injury, I did not detect any new neck issues, but I already had issues of shortened neck muscles, which conceivably could have masked a small new issue.