What causes neck or back pain?

Injuries due to overexertion and poor posture are among the most common reasons for getting pain but the actual cause of the pain is nerve pressure.  Nerve pressure occurs when vertebra are out of place.  This term given to this spinal misalignment or tightened muscle or ligament causing pressure against a nerve is called subluxation. Subluxations interfere with the function of the nervous systems sending and receiving signals between the brain and the rest of the body.  In turn, this lack of proper communication among the parts and systems of the body causes tissue injury, pain or discomfort.