So this started happening a few weeks ago, but whenever I get really cold and that’s quite often since the country I am in is usually cold, I get a shiver down my spine and my neck suddenly spasms. It’s really odd and Doesn’t happen more than 3 or 4 times a day. Try leaning your head on your shoulder and that’s what it’s like. It only happens for a split second but my head violently snaps to my right shoulder, often twice in a row. If not twice then a few seconds after one I get another. I’m just curious as to why this might be happening