Trigger Point Injection

What are trigger points?

Trigger points are also known as muscle knots. Trigger point injections are prescribed to treat unexplained pain that radiates from these points to broader areas.

How is the procedure performed?

Your physician will cleanse the skin overlying the trigger point and insert a small needle into the trigger point. A local anesthetic (and occasionally steroid) will then be injected through the needle.

What should I expect after the procedure?

You may experience numbness from the anesthetic for about an hour after the procedure. You may also get a bruise at the injection site. You may apply moist heat and ice to relieve pain if pain persists. You may consider engaging in stretching exercises and physical therapy following the procedure.

Possible side effects and risks

You may get side effects from steroid medications, which include fevers, hiccups, insomnia, headaches, water retention, increased appetite, increased heart rate, and abdominal cramping or bloating. The side effects, however, are very rare (occur in about 5% of patients) and should be temporary.