This very well could be just muscle tension that is doing this or it could be a couple of other things contributing as well.since you say that you can actually 'see" a misalignment at times,this would really require much more evaluation with your primary.they can usually do a basic x ray at most primarys clinics.this would show any actual misalignment of the vertebrae or the discs.x ray shows bone and discs extremely well.from that point,depending on what is or is not seen,a possible follow up with MRI to really see down to the cord and nerve level would possibly help to identify any "inner" nerve problems that can also be causing the trigger poits and tightened muscles to occur.its kind if a domino effect.any inside inflammation will cause the nerves to irritate the muscle which in turn causeds you the pain from the muscle wads and just plain over tight muscles there.
but you DO need this evaluated by your doc.in some cases,espescially with men(although women will tend to carry their stress in there neck areas),the well developed muscles up there can actually(when they are inflammed)pull things kind of out of whack all by themselves,espescially if there is some sort of degeneration of the discs going on.alot of us actually have some level of degeneration going on inside our spines just from wear and tear and yes of course,age.but this bears some further evaluation just because of the seeing a misalignment occur.once you can find out qwhat is really going on there under the skin,your doc will go to the next step depending on what is or isn't there.just doing some physical therepy(depending on what is there) can make a huge difference in the overall tightness and a big reduction in pain once those trigger points are dissipated.but you need to find out what is actually triggering these to form in the first place.
i wish you lots of luck with this and hope its just a stress thing and nothing more for you to have to deal with.please keep us posted as to what you find out.FB