My daughter who is 14 feels her heartbeat at the back of her neck and feels like its moving her head. She does this on a daily basis. Could it be caused from tension or bad posture? She is 14 weighs 117lbs, she has asthma and was premature,weighing only 2lbs. She has a mild case of scoliosis in which her doctor hasn t ever seemed too concerned about. But at the very top of her back, I guess its the top vertebrae sticks out. I wondered if this could be causing her problems.