Yesterday, as I was at the office working a desk job, I noticed that my neck was getting increasingly sore, but when I tried to stretch it, I noticed that it was extremely stiff. I could only manage to turn it a few degrees to the right or left and was unable to tip my head forward or back to my normal range. As the day progressed, the stiffness continued and the pain worsened. It didn't subside until I was in my bed laying down. Then I noticed that I had my full range of motion back with little pain. I figured it had resolved itself. Waking up this morning, it still felt fine, but within an hour of getting out of bed, it had returned to the same stiffness and pain that was present yesterday. I don't remember doing anything that would put an unusual strain on my neck and cause this. I haven't been in any accidents. I've been working that job for a while now, so I don't think that has anything to do with it. And I don't think I slept on it funny either night because the pain and stiffness didn't start until a while after getting out of bed. The pain seems to be concentrated mostly in the back of my neck towards the top near the base of my skull. My question is if this is something to be worried about or if it will go away on its own. I've had stiff necks before, but can always explain them away because of sleeping in a funny position. It's not the case this time, so I don't know what to make of the situation.