Trigger points create referred pain; they originate a pain impulse that is experienced at a distance from the trigger point. Trigger points most often occur in muscles; trigger points can also be in tendons, ligaments, fascia, internal organs, scars; any soft tissue (non-bony tissue).
Trigger points are areas of altered electrical activity. They have abnormally low electrical activity at rest, then abnormally high electrical activity when the muscle is active. Tissue that has trigger points has abnormally high metabolism, but restricted blood flow; so more nutrients and oxygen are needed, but less nutrients are getting in, and less waste products are getting out.
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