Welcome to the third article in our series on trigger points and their effects on the body. At our Brisbane acupuncture clinic, we provide acupuncture, remedial massage and cupping therapy to help patients relieve muscular pain, improve mobility, and address the underlying causes of chronic discomfort.
In this article,we focus on the scalene muscles, a group of muscles located on the side of the neck that are frequently overlooked but can be a significant source of neck pain, shoulder pain, arm symptoms, and nerve irritation. We’ll explore what the scalenes do, how trigger points develop within these muscles, their common referral patterns, and how acupuncture and dry needling can help.
What are the Scalene Muscles?
The scalene muscles are a group of three muscles located on each side of the neck:
- Anterior scalene
- Middle scalene
- Posterior scalene
These muscles run from the cervical vertebrae of the neck to the first and second ribs. Their primary functions include:
- Assisting with side bending and rotation of the neck
- Stabilising the cervical spine
- Elevating the upper ribs during breathing
Because the scalenes play an important role in both neck movement and respiration, they are particularly prone to becoming overworked in people who experience stress, poor posture, chronic mouth breathing, desk-based work, or repetitive overhead activities.
What are Trigger Points?
Trigger points are hyper-irritable spots that develop within tight bands of muscle tissue. These sensitive nodules can cause local pain, muscle stiffness, weakness, and referred pain patterns that may be felt some distance away from the actual trigger point.
Trigger points often develop due to:
- Poor posture
- Repetitive strain
- Emotional stress
- Acute injuries
- Prolonged sitting
- Excessive accessory breathing patterns
The scalene muscles are particularly susceptible because they often become overactive when people habitually breathe from their upper chest rather than their diaphragm.
Scalene Trigger Point Symptoms
Trigger points within the scalenes can produce a surprisingly wide range of symptoms. Many patientsare surprised to learn that their arm pain or hand tingling may actualy originate from muscles in the neck.
Common symptoms include:
- Neck pain and stiffness
- Pain along the side of the neck
- Shoulder pain
- Pain around the collarbone
- Tightness in the upper chest
- Tingling or numbness into the arm, forearm, or fingers
- Weakness when lifting or carrying objects
- Pain that worsens with deep breathing
- Headaches originating from the neck
Because these symptoms can mimic cervical disc injuries, nerve compression, or shoulder conditions,scalene trigger points are often overlooked during diagnosis.
Common Scalene Trigger Point Referral Patterns
The scalenes have one of the most distinctive referral patterns of any muscle in the body.
Trigger points in the anterior and middle scalenes commonly refer pain into:
- The front of the shoulder
- The upper chest
- The inner border of the shoulder blade
- The upper arm
- The forearm
- The thumb and index finger
Patients often describe a deep aching sensation extending down the arm, sometimes accompanied by pins and needles.
Posterior scalene trigger points may refer pain into:
- The back of the shoulder
- The upper arm
- The outer arm and forearm
These referral patterns can closely resemble nerve-related conditions and are sometimes associated with symptoms similar to thoracic outlet syndrome.
Scalene Trigger Points and Thoracic Outlet Syndrome
The brachial plexus and subclavian artery pass between the anterior and middle scalene muscles. When these muscles become excessively tight or develop trigger points, they can contribute to compression of these structures. This may lead to symptoms such as:
- Numbness in the hand
- Tingling in the fingers
- Cold hands
- Arm fatigue
- Reduced grip strength
While not every case of thoracic outlet syndrome is caused by the scalenes, trigger points within these muscles can often play a significant contributing role.
Associated Trigger Points: How Scalene Dysfunction Affects Other Muscles
Scalene trigger points rarely work alone. In many cases, they are part of a bigger pattern of muscle tension that can spread into nearby muscles and create a cycle of pain and tightness. The sternocleidomastoid (SCM) is one of the muscles most commonly involved alongside the scalenes. These two muscles work closely together, especially during breathing, so if the scalenes have been tight for a while, the SCM often starts to pick up the slack and become irritated too.
Trigger points in the scalenus medius are also commonly seen with trigger points in the upper trapezius, SCM, and splenius capitis muscles. This is one reason why neck pain can sometimes feel so widespread and difficult to pin down.
Associated satellite trigger points may develop in several of the muscles that correspond to the scalene referred pain pattern, including:
- Pectoralis major and minor – often linked with pain felt across the front of the chest
- Rhomboids, middle trapezius, and infraspinatus – which may contribute to pain along the inner border of the shoulder blade
- Long head of triceps brachii – which can match the pattern of pain down the back of the arm
- Deltoid – which may be involved when pain is felt in the front of the arm
- Extensor carpi radialis, extensor digitorum, and extensor carpi ulnaris – which may contribute to pain or tightness in the back of the forearm
- Brachioradialis – another muscle that may become involved in forearm referral
- Brachialis, especially the lateral portion which can be associated with thumb pain
When trigger points in the lateral part of the brachialis are triggered by scalene dysfunction, both the brachialis and the scalenes may refer pain into the thumb. This can make the thumb feel especially sore or sensitive.
If someone comes in mainly with shoulder pain, we often find that scalene trigger points are part of the picture as well. They commonly coexist with trigger points in the rotator cuff, deltoid, biceps brachii, andtriceps brachii muscles, and the pain patterns can overlap quite a bit.
Acupuncture Points Associated with the Scalene Muscles
Several acupuncture points are located near the anatomical region of the scalene muscles and are commonly used in clinical practice to address neck pain, trigger points, and restricted movement.
These may include:
天鼎 Tiāndǐng (LI17)
天窗 Tiānchuāng (SI16)
Depending on the patient’s presentation, additional distal acupuncture points may be selected to address referred pain, nerve irritation, and associated muscular tension. It is important to note that needling in the scalene region requires advanced anatomical knowledge and should only be performed by appropriately trained practitioners due to the presence of important blood vessels, nerves, and the apex of the lung.
How Acupuncture and Dry Needling Can Help Scalene Trigger Points in Brisbane
At our Brisbane acupuncture clinic, we commonly treat neck pain and trigger point dysfunction using a combination of acupuncture, dry needling, remedial massage, and movement-based rehabilitation.
Acupuncture for Scalene Trigger Points
Acupuncture can help:
- Reduce muscle tension
- Improve local circulation
- Decrease pain sensitivity
- Improve neck mobility
- Reduce associated headaches and nerve irritation
Treatment is tailored to each individual and may include both local and distal acupuncture points
Dry Needling for Scalene Trigger Points
Dry needling specifically targets trigger points within the affected muscle.
By inserting a fine acupuncture needle into the trigger point, a local twitch response may be produced,helping to:
- Release muscular tension
- Reduce referred pain
- Improve range of motion
- Restore normal muscle function
Are Acupuncture and Dry Needling the Same?
Dry needling is often considered a subset of acupuncture, focusing specifically on trigger points and myofascial dysfunction.
Both acupuncture and dry needling utilise the same fine sterile needles and stimulate many of the same physiological mechanisms. However, acupuncture encompasses a broader treatment framework that may address pain, mobility, stress, sleep, and overall well-being.
Both approaches can be highly effective when treating scalene trigger points and associated neck pain. Read more about the differences in our dedicated blog post.
Seeking Professional Help for Scalene Pain in Brisbane
If you are experiencing persistent neck pain, shoulder pain, arm tingling, headaches, or symptoms that seem to radiate into the upper limb, scalene trigger points may be contributing to your condition. Our Brisbane acupuncture clinic provides acupuncture, dry needling, remedial massage and cupping therapy to help identify and address the underlying causes of muscular pain and dysfunction. Every treatment plan is tailored to your individual needs, with the goal of restoring comfortable movement, reducing pain, and improving long-term function.
Stay tuned for the next article in our Trigger Point Series, where we’ll explore another commonly overlooked muscle and its role in chronic pain patterns.
Your path to a pain-free life starts here! Learn what to expect during your first visit here.
If you’re looking for acupuncture, remedial massage, or dry needling in Brisbane, book a session at our Brisbane clinic today.
