Can an Injection Help a Painful Muscle Knot?
A trigger point injection places a small needle into a clinician-identified painful muscle knot. It may ease pain or make movement easier for some people, but it is not a guaranteed fix, and an assessment helps determine whether it is appropriate.
Persistent muscle pain is real and can affect sleep, daily tasks, and movement. A trigger point is a sensitive spot in a tight band of muscle that may cause pain nearby or in another area; a clinician checks for it and considers other possible causes before recommending treatment. Cleveland Clinic explains trigger points and injections.
This article explains how trigger points are assessed, what an injection may involve, and how it can fit with other care, such as stretching or physical therapy. At California Pain Institute, Dr. Rebecca Kerr, dual board-certified in Pain Medicine and Anesthesiology and UCLA-trained, has practiced pain management exclusively for more than 25 years. Learn about Dr. Kerr.
What Are Trigger Points, and Who Might Benefit?
A trigger point is a sensitive, tight spot or knot in a muscle. It can cause pain where it forms or refer pain to another area. An injection may ease pain or make movement easier for some people, but it is not right for every type of pain.
What is myofascial pain?
Myofascial pain means pain linked to muscle and fascia, the thin connective tissue around muscle. For example, a trigger point in the trapezius may contribute to a tension headache, while one in the piriformis may be associated with buttock pain or numbness down the back of the leg. These patterns do not explain every headache or leg symptom, so assessment matters.
Cleveland Clinic explains trigger points and referred pain.
When might a trigger point injection be considered?
A clinician may consider an injection when an examination suggests a trigger point is contributing to persistent back pain or neck pain, and heat, massage, stretching, or physical therapy have not helped enough. The clinician should also consider other causes, such as muscle strain, a spinal condition, or a pinched nerve that may cause sciatica.
How are trigger points different from fibromyalgia?
Trigger points differ from fibromyalgia tender points. Trigger points lie in taut muscle bands and may refer pain elsewhere; tender points hurt where pressed. The conditions can coexist, so a careful evaluation helps distinguish what may be contributing to symptoms.
Who might benefit from trigger point injections?
Dr. Rebecca Kerr is dual board-certified in Pain Medicine and Anesthesiology, UCLA-trained, and has practiced pain management exclusively for more than 25 years. An evaluation helps her determine whether a trigger point injection fits the diagnosis, health history, and the patient’s goals.
Dr. Kerr’s approach includes non-opiate, non-addicting medications first, image-guided injections, and coordinating care with other specialists. She sees patients at her offices in Torrance (South Bay) and Los Angeles near LAX.
Frequently asked questions
What are trigger points, and how can injections help? A tight, tender muscle spot may cause local or referred pain. An injection may help some people, but results vary.
Who may be a candidate? Someone whose examination suggests a trigger point is contributing to ongoing pain, depending on symptoms, health history, and goals.
How do I know if I have a trigger point? A physical exam by a clinician can identify tender spots in muscle. Referred pain patterns may also offer clues.
Is a trigger point injection painful? Some discomfort is possible, but the goal is to reduce pain. Your clinician can discuss what to expect.
What should I do if other treatments haven’t helped? If heat, massage, stretching, or physical therapy have not relieved your pain, a trigger point injection may be an option to discuss with your doctor.
How do I schedule an appointment? You can request an appointment with Dr. Kerr online or call her offices.
Request an appointment with Dr. Kerr
Torrance: (310) 504-0632 Los Angeles: (310) 642-7900
Where Are Injections Given, and What Is Injected?
The clinician chooses an injection site based on your symptoms and examination, looking for a tight, tender muscle that may be contributing to your pain. There is no single correct site for everyone.
Trigger points can occur around the jaw, neck, shoulders, head, hips, buttocks, and lower back. Pain may also be felt away from the muscle involved, so the location of your symptoms does not always identify the source. Cleveland Clinic’s overview of trigger point injections describes common treatment areas and referred pain.
A trigger point injection may contain a local anesthetic, such as lidocaine. Other approaches use a needle without injecting medication, a technique called dry needling. A trigger point injection is not the same as a cortisone shot, and steroids are not required; the clinician selects an approach after reviewing your health history and symptoms.
California Pain Institute offers pain treatment services, including trigger point injections. Dr. Rebecca Kerr, dual board-certified in Pain Medicine and Anesthesiology and UCLA-trained, has practiced pain management exclusively for more than 25 years. Ultrasound or X-ray guidance may be used for procedures when appropriate, but not every trigger point injection requires imaging.
What Happens During the Procedure, and What Are the Risks?
A trigger point injection is a procedure where a thin needle is placed into a tender area of muscle, called a trigger point, to help relieve pain. Risks are generally low and may include temporary soreness, bruising, or rare complications like infection. Dr. Rebecca Kerr, dual board-certified in Pain Medicine and Anesthesiology, UCLA-trained, with more than 25 years of exclusive pain management experience, evaluates each patient to determine if the injection is appropriate and may use non-opiate medications or image guidance when needed.
You may feel discomfort as the clinician finds the tender spot, a brief sting or burning, or a short increase in pain. The muscle may twitch or spasm. Temporary soreness, tenderness, numbness, or bruising can follow.
Less common risks include bleeding, infection, an allergic reaction, or injury to a blood vessel. Rare risks can depend on the injection site and technique. Cleveland Clinic explains the procedure and potential risks.
Do trigger point injections hurt, and what side effects can occur?
Tell your clinician about your medicines, allergies, symptoms, and overall health beforehand, including any medicines that may affect bleeding. Contact a healthcare professional if you develop fever or warmth at the injection site. Seek prompt care for severe symptoms, spreading redness, trouble breathing, or new weakness.
For persistent neck pain, Dr. Rebecca Kerr, dual board-certified in Pain Medicine and Anesthesiology, UCLA-trained, with more than 25 years of exclusive pain management experience, may include patient education and coordination with other clinicians. Learn more about Dr. Kerr.
Frequently Asked Questions
1. What is a trigger point injection?
A trigger point injection is a procedure where a thin needle is inserted into a tender muscle area to help relieve pain.
2. How long does the procedure take?
The injection itself takes only a few minutes, but the appointment may include evaluation and discussion.
3. Does a trigger point injection hurt?
You may feel brief discomfort, stinging, or burning. The muscle may twitch. Soreness afterward is common.
4. What are the risks?
Risks include temporary soreness, bruising, bleeding, infection, allergic reaction, or injury to a blood vessel. Rare risks depend on the site and technique.
5. When should I call a doctor?
Contact a healthcare professional if you develop fever, warmth at the site, spreading redness, trouble breathing, or new weakness.
6. How soon can I return to normal activities?
You can usually resume normal activities soon after the procedure, but follow your clinician’s advice.
Request an appointment with Dr. Kerr at California Pain Institute. Torrance (South Bay): (310) 504-0632. Los Angeles near LAX: (310) 642-7900.
What Should I Expect After an Injection?
Most people can go home after a trigger point injection (a procedure where a small amount of medication is injected into a tight, painful muscle knot) and gently use the treated muscle. This type of injection is one option for treating chronic pain conditions such as back pain. Temporary soreness, tenderness, or mild bruising can happen, and does not by itself mean the injection has failed.
The needle may briefly irritate an already sensitive muscle, so discomfort can feel worse before it settles. Avoid strenuous activity for the first few days or follow your clinician’s instructions, and ask when to resume exercise, stretching, or physical therapy. Do not push through significant discomfort. Cleveland Clinic guidance on recovery after a trigger point injection describes these general aftercare steps.
When should I contact my clinician?
Contact your clinician if pain is severe, keeps worsening, or does not begin to settle. Seek emergency care for trouble breathing, fainting, rapidly increasing swelling, sudden weakness, or loss of bladder or bowel control.
At California Pain Institute, Dr. Rebecca Kerr, a dual board-certified physician in Pain Medicine and Anesthesiology who is UCLA-trained and has practiced pain management exclusively for more than 25 years, emphasizes clear instructions and coordinated care. Her practice serves patients in Torrance in the South Bay and Los Angeles near LAX. Dr. Rebecca Kerr, who is dual board-certified in Pain Medicine and Anesthesiology and has more than 25 years of experience, uses image-guided injections and coordinates care with other specialists to address each patient’s needs.
Frequently Asked Questions
What should I expect after an injection? Mild soreness, tenderness, or bruising may occur. Follow your clinician’s guidance on movement and activity.
Why might pain feel worse afterward? Needling may irritate the muscle briefly. Contact your clinician if pain is severe or worsening; seek emergency care for the warning signs above.
When can I return to exercise or physical therapy? Ask your clinician, since timing depends on your symptoms and treatment.
How long does soreness last? Soreness typically resolves within a few days, but follow your clinician’s advice.
Can I take pain medication after an injection? Ask your clinician what pain relief options are appropriate for you.
Learn more about Dr. Rebecca Kerr, or request an appointment with Dr. Kerr. Torrance: (310) 504-0632. Los Angeles: (310) 642-7900.
How Long Might Relief Last, and Can Injections Be Repeated?
Some people notice a change soon after a trigger point injection, while others notice little or no change. Cleveland Clinic says relief may begin within 24 to 72 hours and often lasts about a month, but these are general estimates, not a prediction for any one person. The timing and duration vary.
Depending on the muscle treated, an injection may also help with movement or muscle function. It is often paired with stretching or physical therapy, so reduced pain can make it easier to take part in rehabilitation. Cleveland Clinic’s guidance on trigger point injections describes this role as part of care, rather than a stand-alone treatment.
How often can trigger point injections be given?
There is no universal repeat schedule. A clinician considers the diagnosis, response to earlier treatment, overall health, and other care before deciding whether another injection is appropriate. If an injection does not help, reassessing the cause of pain is important rather than assuming that repeating it will help.
Dr. Rebecca Kerr, dual board-certified in Pain Medicine and Anesthesiology and UCLA-trained, has practiced pain management exclusively for more than 25 years. She emphasizes patient education and coordination with physical therapy and other specialists; when medication is part of care, her approach favors non-opiate, non-addicting options when appropriate.
California Pain Institute serves patients at its Torrance office in the South Bay and its Los Angeles office near LAX. Learn more about Dr. Kerr.
Frequently Asked Questions
How long does it take for an injection to help? Some people notice a change soon after treatment; others may need more time or may not improve. Relief may begin within 24 to 72 hours, according to Cleveland Clinic, but individual responses vary.
How long might relief last? Cleveland Clinic reports that relief often lasts about a month, though this varies and cannot be promised.
How often can injections be repeated? There is no single schedule. The clinician should weigh your response, diagnosis, health, and broader care plan.
To discuss whether an injection fits your care plan, Request an appointment with Dr. Kerr. Call Torrance at (310) 504-0632 or Los Angeles at (310) 642-7900.
What If an Injection Does Not Help?
No change after an injection does not mean your pain is not real. Tell your clinician what you noticed, including whether anything changed briefly or whether the pain stayed the same, so the diagnosis and plan can be reviewed.
A clinician may reassess whether a trigger point is contributing to your symptoms or consider another cause, such as a joint or spine problem. Dr. Rebecca Kerr, dual board-certified in Pain Medicine and Anesthesiology, UCLA-trained, and practicing pain management exclusively for more than 25 years, considers each person’s symptoms and examination findings when discussing next steps.
Options may include medication management, physical therapy, or referral to another specialist. California Pain Institute emphasizes non-opiate, non-addicting medications when appropriate and coordinates care with other clinicians; an injection is not always the right treatment to repeat.
Frequently Asked Questions
Is a trigger point the same as a fibromyalgia tender point? No. Trigger points are found in taut muscle bands and may refer pain elsewhere, while fibromyalgia tender points hurt where pressed and are not linked to referred pain. The conditions can occur together, so an examination may help clarify the cause of symptoms. The American Academy of Family Physicians explains the distinction.
Can an injection be used by itself? It may ease a painful muscle area, but injections are often paired with stretching or physical therapy to support movement and rehabilitation, as described in the Cleveland Clinic’s overview.
Do I need special preparation? Usually, no special preparation is needed. Before treatment, tell your clinician about your medicines, symptoms, and overall health.
Can I go home after the procedure? People can generally go home afterward and use the treated muscle, while avoiding strenuous activity for the first few days. Follow the specific instructions your clinician gives you.
When should I call a clinician after an injection? Contact a healthcare provider if you develop fever or warmth at the injection site, which may be a sign of infection.
For an evaluation with Dr. Rebecca Kerr, learn more about her training and background. Request an appointment with Dr. Kerr through this appointment page, or call Torrance (310) 504-0632 or Los Angeles (310) 642-7900.
Can a Care Plan Address More Than the Knot?
A trigger point injection may ease pain from a specific muscle knot, but it does not treat every cause of chronic pain. A careful assessment can help determine whether the muscle is contributing and what other care may be appropriate.
Dr. Rebecca Kerr, dual board-certified in Pain Medicine and Anesthesiology and UCLA-trained, has practiced pain management exclusively for more than 25 years. She emphasizes patient education and may coordinate injections with physical therapy or other specialists as part of an individualized plan.
For care in Torrance, serving the South Bay, or Los Angeles near LAX, Request an appointment with Dr. Kerr. Call Torrance at (310) 504-0632 or Los Angeles at (310) 642-7900.
