it can occur on just one side. Press under
the corner of your jaw (by your <span style = 'background-color: #dae8f4'>ear</span>
) to feel if it is unusually tender. If so, use a massage vibrator from behind the ear
, to down under the jaw, working your way to where the clavicle meets the base of the neck
next to the esophagus. I tend to see this in people that have stress build up or too much caffeine in their diet. You should see swelling (which is probably just the muscle in a contracted state) go down in a few days or sooner.