I recently was really stressed out from school, along with getting a lower back strain. My thumb and arm had spasms and my neck felt tense and I noticed that when i held my head still my neck muscles seemed to tense up and my head would move slightly. I went to the doctor and he told me that if I don't think about it, it won't happen. well it eventually went away as the stress went away, but just a few days ago it came back, not as bad, but it's the same feeling. The muscles in my neck feel really tense as do the muscles in my shoulders. I recently started playing lacrosse again and my back is still hurting and I'm wondering if it's related... I was wondering if anyone could tell me if when your muscles are tense in your neck if it can make your head move from tensing up. thanks!!