Definitely. All muscles and bones are related, so a knot in one place will put strain on the rest. It is also possible if you have a lump that you have multiple knots and the neck one is just the most noticeable because it hurts most.
If the lump is where your spinal cord is it might be something is being misplace (get that check) if it is near your neck it is probably a pull or stress muscle. relax and get a massage. dont stress out too much