Acupuncture Points and Myofascial Trigger Points: A Comprehensive Overlap Analysis
For decades, researchers have noted a striking anatomical overlap between classical acupuncture points and myofascial trigger points. Both represent specific loci on the body where needling can reduce pain, release muscle tension, and modulate nervous system activity. At Morningside Acupuncture, we use this overlap every day in clinical practice, treating athletes and active patients with techniques drawn from both traditions.
This post offers a thorough overview of how these two systems converge, including a comprehensive region-by-region table mapping acupuncture points to their corresponding muscles and trigger point locations, drawn from clinical research and authoritative reference texts.
Key Points
- Over 90% of common myofascial trigger points correspond anatomically with established acupuncture points (Dorsher, 2008).
- 94% of those anatomically matched pairs also share similar pain referral patterns or clinical indications (Dorsher, 2022).
- Trigger point pain referral patterns correspond to acupuncture meridian distributions in approximately 76% of cases.
- Both acupuncture needling and trigger point dry needling produce overlapping neurophysiological effects, including local muscle release, endogenous opioid release, and improved circulation.
- The comprehensive table below maps over 70 acupuncture points to their corresponding muscles across all body regions.
Overview: Two Systems, One Map
Acupuncture points are specific locations on the body that have been charted for thousands of years. Regardless of how different styles of acupuncture frame their effects, many acupuncture points coincide anatomically with neuromuscular junctions, motor points, or areas of high nerve density. The term "acupuncture" simply refers to the use of an acupuncture needle, and encompasses hundreds of styles and techniques, including dry needling.
Myofascial trigger points are hyperirritable nodules in a taut band of skeletal muscle or fascia, a concept developed in the mid-20th century by Travell and Simons. An active trigger point is tender to touch and can produce referred pain in predictable patterns, along with local twitch responses and restricted range of motion. For a deeper look at the history of trigger points, see our dedicated post.
The overlap between these systems is far too consistent to be coincidental. Melzack et al. (1977) found that 100% of the 48 trigger point locations they examined had a nearby acupuncture point (within 3 cm), and about 71% of those pairs shared similar pain referral patterns. Dorsher (2008) later demonstrated that over 90% of the 255 most common trigger points could be directly mapped to specific acupuncture points, with the probability of this overlap occurring by chance estimated at roughly 1 in 7 trillion.
All trigger points can be considered ashi points in acupuncture (tender spots identified by palpation), though not all ashi points are typical trigger points. This indicates that palpation-based point finding, a hallmark of both traditions, has been identifying the same clinically significant loci through independent paths.
Anatomical and Functional Alignment
Both trigger points and acupuncture points tend to exhibit lowered electrical resistance and heightened sensitivity when active, suggesting a shared physiological substrate. Imaging and microanatomy studies have found that trigger points frequently occur near nerve entry zones or motor endplates in muscles. Many acupuncture points are located in exactly these anatomically significant sites, including nerve bifurcations, muscle motor points, and musculotendinous junctions.
Functionally, stimulating these overlapping sites produces similar outcomes through different explanatory frameworks. Neurophysiological research suggests that needling these points may reduce local nociceptive sensitization, improve blood flow to ischemic tissue, promote endogenous opioid release, and modulate segmental spinal cord activity. These mechanisms operate regardless of whether the practitioner is working from an acupuncture framework or a trigger point dry needling framework.
A particularly interesting finding is that roughly 76% of trigger point pain referral patterns correspond closely to acupuncture meridian distributions. For example, a trigger point in the soleus (calf muscle) refers pain to the heel, following the Bladder channel down the posterior leg. About 24% of common trigger points also produce autonomic or visceral symptoms like dizziness, nausea, or tinnitus. In 93% of those cases, the corresponding acupuncture point carried analogous traditional indications for the same symptoms (Dorsher, 2022).
Schedule an AppointmentComparison of Indications: Examples
The following examples illustrate how specific acupuncture points and their corresponding trigger points share not just location but clinical indication:
Upper Trapezius (GB-21): A classic trigger point in the upper trapezius causes neck and shoulder pain and can refer pain to the temple, producing tension headaches. GB-21 ("Jianjing"), located in the same spot, has been used for centuries to address neck stiffness, shoulder tension, and headaches. Needling GB-21 often reproduces the referred ache toward the head, consistent with the trigger point's referral pattern.
Infraspinatus (SI-11): An active trigger point in the infraspinatus presents as a deep ache in the shoulder blade that can radiate down the arm. Small Intestine 11 ("Tianzong"), located in the center of the infraspinatus fossa, is traditionally indicated for scapular pain and limited arm mobility. This point corresponds precisely to the common infraspinatus trigger point location.
Piriformis and Gluteals (GB-30): Trigger points in the piriformis or deep gluteal muscles can cause sciatica-like pain radiating down the leg. Gallbladder 30 ("Huantiao"), located in the buttock where the piriformis crosses the sciatic nerve, has been a primary acupuncture point for sciatica and hip pain for millennia. Stimulation of GB-30 often reproduces the shooting leg pain characteristic of the piriformis trigger point.
Masseter (ST-6): Trigger points in the masseter refer pain to the teeth, jaw, and temple. Stomach 6 ("Jiache"), located on the masseter belly at the jaw angle, is a classical point for jaw pain, toothache, and TMJ disorders. Needling ST-6 often elicits the same dull pain in the lower teeth or jaw that a masseter trigger point produces.
Gastrocnemius (BL-57): A trigger point in the gastrocnemius causes calf cramps and can refer pain to the heel or sole of the foot. Bladder 57 ("Chengshan"), located at the gastrocnemius mid-belly, is traditionally used for calf spasm and heel pain, matching the trigger point referral pattern precisely.
Comprehensive Acupuncture Point and Trigger Point Overlap Table
The table below provides a region-by-region mapping of classical acupuncture points to their corresponding muscle targets and trigger point locations. This represents a substantially expanded reference compared to typical overview tables, incorporating data from Travell and Simons, Dorsher, Baldry, and other clinical reference texts. The "Target Muscle" column identifies the muscle or structure into which the acupuncture needle is directed at each point, which is also where the corresponding trigger point is found.
| Acupuncture Point | Target Muscle / Structure | Clinical Indications |
|---|---|---|
| Head, Face, and Neck | ||
| Yintang (Extra) | Procerus / periosteum | Headache, sinus congestion, relaxation |
| Taiyang (Extra) | Temporalis | Temporal headache, eye symptoms |
| GB-14 Yangbai | Frontalis | Frontal headache, eye symptoms |
| LI-20 Yingxiang | Facial muscles (nasolabial) | Nasal congestion, sinus symptoms |
| ST-6 Jiache | Masseter | Jaw pain, TMJ dysfunction, toothache, bruxism |
| ST-7 Xiaguan | Lateral pterygoid | TMJ pain, earache, upper toothache |
| ST-8 | Epicranial tissues / temporalis | Headache |
| SI-18 Quanliao | Connective tissue (zygomatic) | Facial pain, trigeminal neuralgia |
| LI-18 Futu (neck) | Sternocleidomastoid (fascial plane) | SCM-related headache, facial pain |
| GB-20 Fengchi | Semispinalis capitis / suboccipital muscles | Occipital headache, migraine, dizziness, neck stiffness |
| BL-10 Tianzhu | Obliquus inferior / deep cervical muscles | Neck pain and stiffness |
| GB-21 Jianjing | Upper trapezius | Neck/shoulder pain, tension headaches, shoulder stiffness |
| TE-15 Tianliao | Trapezius (mid-fibers, superior scapula) | Shoulder pain, neck pain and stiffness |
| GV-14 Dazhui | Interspinous ligament (C7-T1) | Spinal neck pain, headache of cervical origin |
| SI-14 Jianwaishu | Levator scapulae | Shoulder pain, neck pain and stiffness |
| BL-11 Dazhu | Rhomboid minor | Neck pain and stiffness |
| BL-45 Yixi | Iliocostalis thoracis (upper) | Dorsal back pain |
| Shoulder and Arm (Posterior) | ||
| LI-16 Jugu | Supraspinatus | Shoulder and arm pain |
| TE-14 Jianliao | Infraspinatus insertion / posterior deltoid | Shoulder and arm pain |
| SI-9 Jianzhen | Teres major | Shoulder and arm pain |
| SI-10 Naoshu | Infraspinatus | Shoulder and arm pain |
| SI-11 Tianzong | Infraspinatus (center of fossa) | Shoulder blade pain, deep shoulder ache, frozen shoulder |
| SI-12 Bingfeng | Supraspinatus | Shoulder and arm pain |
| SI-13 Quyuan | Supraspinatus | Shoulder and arm pain |
| TE-13 Naohui | Lateral head of triceps | Shoulder and arm pain |
| LI-11 Quchi | Extensor carpi radialis longus | Lateral epicondylalgia, forearm pain; immunomodulation |
| LI-10 Shousanli | Extensor carpi radialis longus / supinator | Lateral epicondylalgia, forearm pain |
| TE-5 Waiguan | Connective tissue plane (forearm extensors) | Wrist and forearm pain; general pain point |
| LU-7 Lieque | Connective tissue (radial wrist) | Wrist and forearm pain |
| LI-4 Hegu | 1st dorsal interosseous | General pain point; hand pain; central regulatory effects |
| SI-3 Houxi | Connective tissue (hypothenar) | Hand pain; used for spinal pain |
| Shoulder and Arm (Anterior) | ||
| LI-15 Jianyu | Supraspinatus insertion / anterior deltoid | Shoulder and arm pain |
| Coracoid (Extra) | Coracoid / pectoralis major | Shoulder and arm pain |
| LI-14 Binao | Connective tissue (deltoid-biceps junction) | Shoulder and arm pain |
| LU-5 Chize | Brachioradialis | Elbow or forearm pain |
| HT-3 Shaohai | Pronator teres | Medial epicondylalgia, forearm pain |
| PC-6 Neiguan | Flexor digitorum superficialis | Nausea and vomiting, carpal tunnel syndrome |
| Thorax, Abdomen, and Spine (Anterior) | ||
| ASAD (Extra) | Periosteum of manubrium | Anxiety, nausea, dyspnea |
| CV-17 Shanzhong | Connective tissue / sternalis region | Chest pain, respiratory conditions |
| CV-12 Zhongwan | Linea alba | Upper GI disorders, nausea, vomiting |
| CV-4 Guanyuan | Linea alba | Lower GI, urological, gynecological symptoms |
| SP-15 Daheng | Linea semilunaris / external oblique border | Abdominal pain |
| ST-21 Liangmen | Rectus abdominis (upper) | Upper abdominal pain, GI symptoms |
| ST-25 Tianshu | Rectus abdominis (mid) | Abdominal pain, GI symptoms (front-mu of large intestine) |
| ST-27 Daju | Rectus abdominis (lower) | Lower abdominal pain, urological/gynecological symptoms |
| ST-28 Shuidao | Rectus abdominis (lower) | Lower abdominal pain, urological/gynecological symptoms |
| Thorax, Abdomen, and Spine (Posterior) | ||
| Huatuojiaji (Extra) | Multifidus (T1-L5) | Spinal pain, segmental acupuncture |
| BL inner line (BL-21 to BL-28) | Erector spinae (multifidus/longissimus) | Back pain, segmental innervation effects |
| BL outer line (BL-44 to BL-54) | Iliocostalis thoracis / iliocostalis lumborum | Dorsal and lumbar back pain |
| GV-4 Mingmen | Interspinous ligament (L2-L3) | Spinal pain |
| GV-3 Yaoyangguan | Interspinous ligament (L4-L5) | Spinal pain |
| Back and Hip Girdle (Lateral) | ||
| GB-29 Juliao (hip) | Tensor fasciae latae / glutei | Hip girdle pain |
| GB-30 Huantiao | Piriformis / tensor fasciae latae (deep lateral hip) | Sciatica, hip and leg pain, low back pain |
| Back and Hip Girdle (Posterior) | ||
| BL-53 Baohuang | Gluteus medius | Hip girdle pain, back pain |
| BL-54 Zhibian | Piriformis | Hip girdle pain, back and leg pain, sciatica |
| BL-33 | S3 posterior foramen | Pelvic pain, detrusor instability |
| BL-35 Huiyang | Sacrotuberous ligament | Coccydynia |
| BL-36 Chengfu | Hamstring attachment (proximal) | Hamstring pain, sciatica |
| BL-40 Weizhong | Connective tissue (popliteal fossa) | Local pain, sciatica |
| Thigh and Lower Leg (Anterior / Medial) | ||
| ST-31 Biguan | Rectus femoris / sartorius | Thigh pain, anterior knee pain |
| ST-32 Futu (thigh) | Vastus lateralis | Thigh pain |
| ST-33 Yinshi | Vastus lateralis | Thigh and knee pain |
| ST-34 Liangqiu | Vastus lateralis | Knee pain |
| SP-11 Jimen | Vastus medialis | Thigh and knee pain |
| SP-10 Xuehai | Vastus medialis | Knee pain |
| ST-35 Dubi / Xiyan | Knee capsule / patellar tendon | Knee pain |
| ST-36 Zusanli | Tibialis anterior | Knee pain, abdominal problems; major central effects point |
| ST-40 Fenglong | Extensor hallucis longus / anterior compartment | Local pain; traditional indications |
| SP-9 Yinlingquan | Connective tissue (medial tibial condyle) | Knee pain, gynecological/urological problems |
| SP-6 Sanyinjiao | Flexor digitorum longus | Gynecological problems; major central effects point |
| LR-4 Zhongfeng | Connective tissue (medial ankle) | Ankle pain |
| LR-3 Taichong | 1st dorsal interosseous (foot) | Local pain, headache, abdominal problems; central effects |
| Thigh and Lower Leg (Lateral) | ||
| GB-31 Fengshi | Vastus lateralis / vastus intermedius | Thigh and knee pain |
| GB-32 Zhongdu (thigh) | Vastus lateralis / vastus intermedius | Thigh and knee pain |
| GB-33 Xiyangguan | Connective tissue (lateral knee) | Knee pain |
| GB-34 Yanglingquan | Peroneus longus | Leg pain; general musculoskeletal point |
| GB-39 Xuanzhong | Peroneus brevis | Lower leg and ankle pain |
| GB-40 Qiuxu | Connective tissue (lateral ankle) | Ankle pain |
| GB-41 Zulinqi | 4th dorsal interosseous (foot) | Forefoot pain |
| Thigh and Lower Leg (Posterior) | ||
| BL-36 Chengfu | Hamstring attachment | Local pain, hamstring pain, sciatica |
| BL-37 Yinmen | Biceps femoris / semimembranosus | Posterior thigh pain |
| BL-55 Heyang | Fascial plane (between gastrocnemius heads) | Calf pain |
| BL-56 Chengjin | Fascial plane (gastrocnemius) | Calf pain |
| BL-57 Chengshan | Gastrocnemius (musculotendinous junction) | Calf cramps, heel pain, Achilles tendon pain |
| BL-58 Feiyang | Gastrocnemius (lateral musculotendinous junction) | Calf pain |
| BL-60 Kunlun | Connective tissue (lateral ankle/Achilles) | Painful conditions of spine; sciatica; Achilles tendon pain |
| KI-3 Taixi | Connective tissue (medial ankle/Achilles) | Ankle problems; urogenital problems; central effects |
Table: Comprehensive mapping of classical acupuncture points to their corresponding muscle targets and trigger point locations, organized by body region. Each acupuncture point is listed with the primary muscle or structure targeted by needling at that location, along with the clinical indications shared between the acupuncture tradition and trigger point medicine. Data compiled from Travell and Simons (1983, 1992), Dorsher (2008, 2022), Baldry (2005), and White, Cummings, and Irnich (2018).
Schedule an AppointmentNeedling Techniques and Physiological Effects: Acupuncture vs. Dry Needling
When treating these overlapping points, practitioners of acupuncture and trigger point dry needling sometimes use different techniques, yet the physiological outcomes share considerable common ground.
Traditional acupuncture involves inserting a fine needle to a specific depth and manipulating it to produce a sensation called "deqi," a dull ache, heaviness, or tingling that radiates from the point. In trigger point dry needling, the technique is generally more direct: the needle is inserted into the taut muscle band and moved (pistoned or fanned) to provoke a local twitch response, a brief involuntary contraction of the muscle fibers that signals the trigger point is being released.
Despite these technical differences, both methods insert the same stainless-steel filiform needles into the body's soft tissues, and in many cases they are needling the same anatomical spots. The immediate mechanical action, a needle disrupting contracted muscle fibers and stimulating nerve endings, is similar. Both approaches cause local micro-trauma that prompts the body's healing responses: increased blood flow, release of neurotransmitters, and a reset of muscle spindle activity.
Shared Physiological Effects
Localized muscle release: Inserting a needle into a knotted muscle produces a twitch followed by reflexive relaxation of the taut band. This results in reduced muscle tone, restored length, and improved blood perfusion.
Neural modulation: Both techniques stimulate A-delta and C fibers, sending signals to the spinal cord and brainstem that may disrupt pain circuits. Acupuncture has been shown to promote release of endogenous opioids (endorphins, enkephalins) and neurotransmitters like serotonin in the central nervous system, producing generalized pain relief. Trigger point needling, through intense stimulation, likely activates similar descending inhibitory pathways.
Circulation and healing: The physical act of needling causes a minor inflammatory response that brings blood flow and immune activity to the area. In a tight, ischemic trigger point nodule, this may help clear metabolites and reduce hypoxia. Studies measuring biochemical changes have found both acupuncture and dry needling may reduce the concentration of nociceptive substances (like substance P, CGRP) around a painful locus.
Outcomes: Several randomized controlled trials comparing trigger point needling versus acupuncture for chronic low back pain, neck pain, and knee osteoarthritis have found no significant difference in pain relief. Both provided improvement, suggesting that stimulating key points achieves similar clinical benefit regardless of the theoretical framework applied (Itoh et al., multiple trials; Dorsher, 2008).
Less-Documented Overlaps: Ashi Points and Visceral Reflexes
While most common trigger points coincide with established acupuncture points, some trigger points do not clearly map to named classical points. These often fall into the category of ashi points (tender spots found by palpation) or extra points outside the standard meridian system.
Some of these "orphan" trigger points have noteworthy clinical effects involving visceral or autonomic reflexes that were not explicitly described in classical acupuncture texts:
Pectoralis major "cardiac arrhythmia" trigger point: Travell identified a trigger point in the left chest (near the 5th intercostal space medial to the nipple) capable of inducing cardiac arrhythmia or palpitations. The nearest classical point (PC-1) is traditionally indicated for chest pain and cough, but not specifically arrhythmia. Modern acupuncturists now frequently treat pectoral trigger points for arrhythmia and anxiety-related chest tightness, blending Travell's findings with acupuncture practice.
"Belch button" trigger point: An upper abdominal trigger point, possibly in the diaphragm or epigastric region, that when pressed causes burping and may relieve epigastric bloating. The nearest acupuncture points (CV-14/CV-15) address "rebellious Qi" (nausea, belching) in traditional terms, offering a conceptual parallel.
Lateral pterygoid trigger point: This deep jaw muscle trigger point causes jaw clicking, TMJ pain, ear pain, and sinus congestion. It is reached by deep needling at or near ST-7 (Xiaguan), showing an overlap in access route, though classical texts described the symptoms (ear and toothache) without naming the underlying muscle.
Even when a trigger point does not correspond to a formal acupuncture point, the concept of ashi points in acupuncture effectively acknowledges that not all clinically significant points have names. Palpation-based point finding remains a valuable clinical tool in both traditions.
Frequently Asked Questions
Are acupuncture points and trigger points the same thing?
They are not identical concepts, but there is extensive anatomical overlap. Over 90% of common trigger points correspond to established acupuncture points. Both represent clinically significant loci on the body where needling may reduce pain and improve function. The two systems arrived at remarkably similar maps of the body through independent paths.
Is dry needling the same as acupuncture?
Dry needling is a style of acupuncture, since it uses an acupuncture needle. Both techniques insert the same filiform needles into soft tissue. The primary differences are in theoretical framework, needle manipulation technique, and treatment philosophy. In clinical practice, many acupuncturists integrate trigger point dry needling into their treatments, and the physiological effects at overlapping points are similar.
What is an ashi point?
An ashi point is a tender spot identified by palpation during examination, not tied to a named location on the meridian system. The term means "Ah yes!" in Chinese, referring to the patient's response when the spot is pressed. All trigger points can be considered ashi points, though not all ashi points meet the strict criteria for a myofascial trigger point.
Can acupuncture help with trigger point pain?
Yes. Because acupuncture points and trigger points so frequently overlap, acupuncture treatment often directly addresses trigger points. At Morningside Acupuncture, treatments commonly combine direct trigger point needling with broader acupuncture protocols for a comprehensive approach to musculoskeletal pain.
Learn more: Trigger Points Guide | Trigger Point Index
Contact Us to Schedule an AppointmentSources
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Birch, S. (2003). Trigger point-acupuncture point correlations revisited. Journal of Alternative and Complementary Medicine, 9(1), 91-103. https://pubmed.ncbi.nlm.nih.gov/12676038/
Dorsher, P. T. (2008). Can classical acupuncture points and trigger points be compared in the treatment of pain disorders? Birch's analysis revisited. Journal of Alternative and Complementary Medicine, 14(4), 353-359. https://pubmed.ncbi.nlm.nih.gov/18576919/
Dorsher, P. T. (2022). The anatomic, clinical, and physiologic correspondences of myofascial trigger points and classical acupuncture points. Longhua Chinese Medicine, 5(7), 1-10. https://lcm.amegroups.org/article/view/7891/html
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White, A., Cummings, M., & Irnich, D. (2018). An introduction to Western medical acupuncture. Elsevier.
Chae, Y., Lee, I., & Lee, H. (2022). Similarities between ashi acupoints and myofascial trigger points: Exploring the relationship between body surface treatment points. Frontiers in Neuroscience, 16, 967114.