Trigger Point Injections: What They Treat and How They Work

Many people describe their pain as a “muscle knot,” tight trap, or painful area between the neck and shoulder blade.

Often, that type of pain is related to myofascial pain syndrome, where sensitive trigger points develop in muscles and fascia. These trigger points can cause local tenderness and can also refer pain into nearby areas.

A trigger point injection is a treatment used to calm down those painful muscle knots. It is commonly used for myofascial pain in the neck, shoulders, upper back, shoulder blade region, jaw muscles, and low back. Muscles often involved include the trapezius, levator scapulae, sternocleidomastoid, and other postural muscles.

So how does it work? A small needle is placed directly into the trigger point. The injection may contain a local anesthetic, sometimes medication, or in some cases the benefit comes mainly from the mechanical effect of the needling itself. The goal is to reduce pain, improve muscle relaxation, and make it easier for the patient to tolerate stretching, physical therapy, and movement again.

Trigger point injections are especially helpful when muscle pain is contributing to neck tension, tension headaches, trapezius pain, or shoulder blade pain. For some patients, the muscle pain is the main issue. For others, it is part of a larger picture that may also involve posture, overuse, poor ergonomics, stress, or an underlying spine or joint problem.

It is important to understand that trigger point injections are not the same as spine injections. A trigger point injection targets muscle tissue. A spine-related injection, like an epidural or facet injection, targets nerves, joints, or inflammation around the spine. That difference matters because the treatment should match the pain generator.

A good pain evaluation helps determine whether the pain is truly muscular, coming from the neck or spine, or a combination of both. When used appropriately, trigger point injections can be a useful part of a larger plan that includes exercise, posture correction, rehabilitation, and activity modification.

⚠ When to Seek Medical Attention

Muscle pain should be evaluated promptly if it is accompanied by new or worsening weakness, significant numbness or tingling, fever, unexplained swelling, or changes in bowel or bladder control. These symptoms may indicate that the pain is coming from something other than a muscle trigger point.

Frequently Asked Questions

What do trigger point injections treat? 

• They treat myofascial pain caused by tender muscle knots or trigger points.

Are trigger point injections the same as epidural injections? 

• No. Trigger point injections target muscle. Epidurals target spinal nerve inflammation.

  
  

Can trigger points cause headaches? 

• Yes. Trigger points in muscles like the trapezius and neck muscles may contribute to tension headaches.

Could Muscle Knots Be Behind Your Pain?

Persistent muscle tightness, neck tension, or shoulder blade pain may be related to trigger points. A proper evaluation can help identify the source of your discomfort and determine whether trigger point injections or another treatment may be appropriate.

∘Schedule a consultation with a pain management specialist to explore your options.∘