I had my boyfriend rub those same spots at the back of my
neck very hard, (until I was bruised!)
and it let up significantly! I did feel a hint of it here
and there the following few days, so I did lots of self rubbing to the neck and stretching. Now, it's basically gone. The only time I notice anything similar to that sensation is when I am having a particularly bad allergy day and the post nasal drip is in abundance.