I just got the same pain today i dont know what it is from but it is now tingling. I swear i didnt scratch the back of my neck today. I am a Colorguard for minnesota's 728 cadets marching band and we had a parade today. We had do hairspray our hair and puff it up but right when i got home from the event i thouroghly washed my hair. I dont know what it is or how to get rid of it!
all of the published studies to date about chriopractic neck manipulation, agree that the risk is extremely low. Overall, a ratio of one to two cases per million neck adjustments represents a conservative and generally recognized estimate.
So,don't too worry. you should go to see orthopaedic doctor if pain constant.
Take care!