Trigger point injections have become a popular option for people looking for natural, minimally invasive pain management. If you live with chronic muscle pain and knotted, tender spots that will not release, you may have wondered whether an injection could help, how it works, and what the appointment actually involves.
This guide answers those questions. It explains why trigger points form, how a trigger point injection works, the conditions it can help, and exactly what to expect before, during, and after treatment at Oak Brook Medical Group.
What is a Trigger Point Injection?
A trigger point injection (TPI) is a procedure in which a thin needle delivers a small amount of medication directly into a painful muscle knot to relax the muscle fibers and ease pain. At Oak Brook Medical Group, the injection uses a local anesthetic such as lidocaine or bupivacaine, and sometimes saline or Sarapin. The practice does not use corticosteroids.
TPI is minimally invasive and requires no downtime, so most people return to their normal activities the same day. It is important to understand that a trigger point injection treats the symptoms of a trigger point, not the underlying cause. Identifying and addressing what is creating the trigger points in the first place is key to long-term relief, and TPI is not appropriate for everyone.
What are Trigger Points and Why Do They Form?
Trigger points are small, highly sensitive knots within a muscle that can cause pain and discomfort. They are most common in the back, buttocks, and neck, but they can form in almost any muscle. People with trigger points often experience muscle spasms, weakness, and pain that can refer, or spread, to other areas. Some also report headaches or eye pain.
Manual labor is a leading cause, but several other factors contribute:
- Overuse of muscles: Repetitive motions such as typing or playing an instrument can lead to trigger points in the muscles doing the work.
- Injuries: Strains, sprains, fractures, and post-surgical trauma can damage muscle fibers and form trigger points, sometimes with more severe pain than overuse.
- Stress: Emotional stress raises muscle tension, which can accelerate trigger point formation.
- Postural imbalances: Holding one position for long periods overworks certain muscles, which is why trigger points are common in people with desk jobs and in older adults.
- Medical conditions: Fibromyalgia, myofascial pain syndrome, and chronic fatigue syndrome are associated with chronic muscle tension and trigger points.
Trigger points can also result from a combination of these, such as muscle overuse alongside an underlying condition.
How Does a Trigger Point Injection Work?
When the solution is placed into the knot, a few things happen together to relieve pain:
- Pain signal relief: The local anesthetic blocks the pain signals the trigger point is generating, which can provide fairly immediate relief.
- Breaking up the knot: The needle itself, along with the small muscle twitch it produces, helps disrupt the taut band of muscle so it can release.
- Muscle relaxation and circulation: As the knot relaxes, blood flow to the area improves, which supports recovery.
Because the effect is focused on the muscle knot rather than the root cause, results build with a properly followed treatment plan and the exercises your provider recommends.
What Do Trigger Point Injections Treat?
Providers use trigger point injections to reduce muscle pain and tension across a range of conditions. Most patients seek TPI for back and neck pain, but it can also help with the conditions below. The degree and duration of relief vary from person to person and with the severity of the condition.
| Condition | How TPI may help |
| Fibromyalgia | Eases the myofascial trigger points that contribute to widespread fibromyalgia pain |
| Myofascial pain syndrome | Releases tension in trigger points and may interrupt pain-signaling pathways |
| Tension headaches | Relaxes trigger points in the neck, shoulders, and head that feed the headache cycle |
| Muscle strains | Relieves pain and restores function in overused or strained muscles |
| Sports injuries | Reduces tension from repetitive, high-impact movement |
| Frozen shoulder | Used alongside other treatments to ease stiffness and pain |
| TMJ disorder | Relaxes jaw and facial muscles so chewing and speaking are more comfortable |
For tension-type headaches specifically, TPI is often one part of a broader plan. Our guide on chiropractic care for headaches explains the other approaches that pair with it. TPI is also used as part of care for conditions like a herniated disc and muscle pain related to a pinched nerve.
What to Expect During the Procedure
Trigger point injection treatment is quick and does not require downtime. Here is how the process works at Oak Brook Medical Group.
- Consultation: A provider reviews your medical history and examines you to determine whether TPI is appropriate, and answers your questions about the treatment.
- Locating the trigger point: Using palpation and the local twitch response, the team finds the tender knot and marks the skin, then cleans the site. A cooling spray may be used to numb the area.
- The injection: A fine needle is inserted into the trigger point. You may feel a brief muscle twitch, which confirms the needle has reached the knot, followed by a small amount of anesthetic to numb the point and help break it up.
- Post-treatment exercises: Your provider recommends stretches and exercises to improve flexibility and reduce the chance the tension returns.
- Follow-up: Because trigger points can be stubborn and may need more than one session, a follow-up visit is scheduled to check your response and adjust the plan.
What to expect afterward
Most people can return to daily activities right away. Some experience temporary swelling, dizziness, lightheadedness, or minor bleeding at the site, which typically settles on its own. Many patients feel relief within about 24 to 72 hours, and that relief often lasts around a month before another injection may be considered. Onset and duration vary with the size and severity of the trigger point and the underlying condition.
How to Prevent Trigger Points From Returning
A previously affected muscle is more likely to develop trigger points again, especially if the original cause is still present. These habits help reduce repeats after treatment:
- Stretch and move regularly: Consistent stretching and exercise improve flexibility and reduce tension, which matters most if you sit for long periods or perform repetitive movements.
- Mind your posture: Sitting and standing in positions that minimize muscle strain lowers the stress that forms knots.
- Stay on top of maintenance care: Regular chiropractic care and physical therapy help keep muscles and joints aligned, part of the broader natural pain management approach.
- Sleep well and manage stress: Good sleep and lower stress reduce the muscle tension that drives trigger point formation. Meditation, yoga, and regular activity all help.
These strategies do not treat existing trigger points, but they are effective at preventing repeats after treatment.
Final Thoughts
Trigger point injections are a minimally invasive way to calm painful muscle knots, using a local anesthetic to block pain signals and help release the taut band of muscle. They can support relief for conditions like myofascial pain syndrome, fibromyalgia, tension headaches, and muscle strains, usually within a few days and often lasting about a month. TPI treats symptoms rather than the cause, so it works best alongside posture, movement, and care that addresses why the trigger points form.
If muscle knots are affecting your daily life, the team at Oak Brook Medical Group can assess whether trigger point injections are right for you and build a plan around your needs. Learn more about our trigger point injection treatment, call 630-317-7478, or book an appointment online.
This article is for educational purposes only and is not a substitute for professional medical advice. Consult your healthcare provider for personalized evaluation.
Frequently Asked Questions
Do trigger point injections hurt?
Most people feel only a brief sting and a short muscle twitch when the needle reaches the knot. A cooling spray or local anesthetic is used to reduce discomfort at the site.
How long do trigger point injections take to work?
Many patients feel relief within about 24 to 72 hours. The timing depends on the severity of the trigger point and the underlying condition.
How long does the relief last?
Relief often lasts around a month. Because trigger points can be stubborn, more than one session may be needed, and your provider will space treatments based on your response.
Are there side effects?
Temporary swelling, dizziness, lightheadedness, or minor bleeding at the injection site can occur and usually resolve quickly. Your provider will review your history to confirm TPI is safe for you.
Do trigger point injections cure the problem?
No. TPI relieves the symptoms of a trigger point but does not fix the underlying cause. Lasting results come from addressing what is creating the trigger points, such as posture, overuse, or an underlying condition.
Who administers the injection?
At Oak Brook Medical Group, a nurse practitioner performs the injection as part of a coordinated care plan with the wider clinical team.
