A subluxation is when one or more vertebrae lose their normal position. They interfere with the nerves they were meant to protect. This interference can cause pressure or irritation on the spinal cord and/or on the nerve roots as they pass out of the spinal column. This misalignment of the vertebrae and pinching of the nerves is called a subluxation and is the most common aspect of what doctors call the vertebral subluxation complex.
Common signs of subluxation are headaches, pain at the base of the skull, pain or numbness of the face, stiffness or loss of normal movement of the neck, neck pain, shoulder, arm and hand problems including pain, numbness and loss of strength. It causes nerve related problems involving eyes, ears, nose and throat. Other results include tension between the shoulders, mid-back pain, pain wrapping around rib cage, problems affecting the heart, lungs, stomach, gall bladder and other digestive organs.