About Trigger Point Injections


Trigger Point Injections (TPI) is a procedure used to treat irritable, painful, and taut areas of muscle that contain trigger points, or knots of muscle that form when muscles do not relax. Pressing on the trigger point will “trigger” pain at the area of pressure and often in other areas. Many times these knots can be felt under the skin. Trigger points may irritate the nerves around them and cause referred pain, or pain that is felt in another part of the body. They can occur from direct muscle injuries, poor posture, stress, repetitive strain, or secondary from spine conditions such as a herniated disc.

Types of Trigger Points

The Active Type: An active trigger point is an area of hyperirritability in a muscle or its surrounding tissue that causes the patient pain. An active trigger point causes pain and tenderness at rest or with motion that stretches or strains the muscle. It prevents full lengthening of the muscle, as well as fatigue and decreased strength. Pressure on an active trigger point induces and reproduces some of the patient’s pain complaint and is recognized by the patient as being some or all of his or her pain.

The Latent Type: A latent trigger point does not cause pain during normal activities. It is locally tender, but causes pain only when palpated. It also refers pain on pressure. It can be associated with a weakened shortened more easily fatigued muscle.

Questions about Trigger Point Injections?

For more information on Trigger Point Injections, visit the Trigger Point Injections FAQ page.

Free Trigger Point Injection and Pain Management Consultations

Call 480-839-4131 or use the consultation request form located throughout the site to schedule your free consultation about trigger point injections and pain management treatment options.

We serve patients in the Phoenix AZ area including Tempe, Chandler, Gilbert, Mesa, Scottsdale, Ahwatukee, Peoria, Glendale, Avondale and Fountain Hills. All patients always work directly with one of our licensed physicians to ensure patient safety and confidentiality.