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What are trigger point injections (TPI)?

A trigger point injection is an injection (shot) into a painful area of muscle. Normal muscles tighten and relax as you use them. A trigger point is a tight knot or band of muscle that forms when a muscle will not relax. They can be very painful. An injection into the trigger point can help it relax and relieve the pain. Trigger point injections are usually accompanied by muscle strengthening and flexibility exercises. Many patients receive a series of trigger point injections, usually a few weeks apart.

Dr. Howard S. Smith
Pain Medicine Specialist

Trigger point injections are sometimes given for neck pain, headaches, and low back pain to treat muscle spasm and other soft tissue problems. These injections of medications such as a local anesthetic or cortisone derivative are given directly into the painful site to alleviate pain and inflammation.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.