This project aim to find why some acute mTBI patients turn into chronic pain patients, and other do not. We recruit patients immediately after the accident, and get them through clinical, pshcyophysical and psychological assessment, brain MRI, EEG, and genetic tests. We then follow up on the pain levels along one year. All clinical work is done in Israel, analysis is done in cooperation with leading teams in the US, Canada and Australia. So far we recruited 346 patients, 196 of them participated in the first visit within 72 hours after the accident, 155 participants answered the 3 months follow up questions, 141 answered the 6 months, and 101 answered the 12 months follow up questions. 52 participated in the 6 months visit and 42 participated in the 12 months visit, of which 18 participants were tested in both sessions.