Trigger point Injections

A straightforward Guide for Patients

What are Trigger Point Injections?

A trigger point is a tight, irritable band of muscle that forms when muscle fibers become contracted and cannot relax on their own. These knots can cause local tenderness as well as referred pain into nearby areas. Trigger points commonly develop in the neck, shoulders, upper back, lower back, and gluteal muscles.

A trigger point injection (TPI) is a minimally invasive procedure designed to relax these tight muscle bands, reduce pain, and restore mobility.

Goal of the Procedure

The purpose of a trigger point injection is to:

  • Reduce pain caused by tight, irritated muscle bands
  • Improve muscle relaxation and range of motion
  • Decrease muscle spasms
  • Improve function and ease of movement
  • Assist your participation in physical therapy
  • Provide diagnostic information by confirming whether the trigger point is the source of pain

Procedure Overview

  • You will be positioned comfortably, typically sitting or lying down, depending on the location of the trigger point.
  • The skin is cleaned using an antiseptic solution.
  • Your provider identifies the trigger point by palpation (feeling the tight band of muscle) and may mark the area.
  • A small needle is inserted directly into the trigger point.
  • A small amount of local anesthetic, sometimes combined with a steroid, is injected into the muscle band.
  • In some cases, a technique called dry needling (needle without medication) may be used if preferred.
  • The muscle often twitches briefly during the injection — this is a normal response and indicates the needle is in the tight muscle band.
  • Each trigger point injection takes only a few seconds; multiple points may be treated in the same visit.
  • The entire procedure usually lasts 5–10 minutes.

Expected Results

  • Lasting improvement typically develops over several days as the muscle relaxes.
  • Results may last weeks to months, depending on underlying conditions and participation in rehabilitation exercises.

After the Procedure

Follow the instructions provided by your care team:

  • Some immediate relief may occur due to the local anesthetic.
  • Mild soreness at the injection site can last 1–2 days.
  • Apply ice packs at home as needed for comfort.
  • Gentle stretching is encouraged once the muscle relaxes.
  • Avoid heavy lifting or strenuous activity for the remainder of the day.
  • You may return to normal activities the next day as tolerated.
  • Trigger point injections are often combined with physical therapy, stretching, posture training, or strengthening exercises for the best long-term results

Potential Risks

Trigger point injections are considered safe. Potential but uncommon risks include:

  • Temporary soreness or bruising
  • Bleeding at the injection site
  • Infection (rare)
  • Mild dizziness or lightheadedness
  • Temporary numbness
  • No relief or incomplete relief of symptoms
  • Very rarely, if performed in the chest wall, risk of pneumothorax (collapsed lung)

Insurance Requirement

Insurance carriers may request documentation of:

  • Failed conservative measures (stretching, physical therapy, heat/ice therapy, medications)
  • Persistent muscle pain lasting several weeks
  • Prior related treatments