TDN is a treatment for muscular tightness and spasm which commonly follows injuries and often accompanies the degenerative process. This muscular tightness and spasm will cause compression and irritation of the nerves exiting the spine. When the nerves are irritated, they cause a protective spasm of all the muscles to which they are connected. This may cause peripheral diagnosis, such as carpal tunnel, tendonitis, osteoarthritis, muscles at the trigger points causing the pain referral. The muscles would then contract and release, improving the flexibility of the muscle and decreasing symptoms.