The "knot" in the shoulder has a name and a treatment

Almost every adult has felt that painful "lump" in the shoulder or neck — a hardened area that, when pressed, generates a characteristic pain that sometimes radiates to the head, arm, or back. This finding has a precise name: myofascial trigger point. It is not a myth, not generic tension, and not psychosomatic — it is a measurable structural and neurophysiologic alteration, studied for more than 70 years.

Dr. Janet Travell — the White House physician who treated President John Kennedy for chronic low back pain — was the pioneer in the systematic mapping of trigger points. Her atlas of referred pain, published with David Simons in the 1980s, remains the foundational reference of the field. The upper trapezius, which forms the characteristic shoulder-shrug curve from neck to shoulder, is the muscle with the highest prevalence of trigger points in the entire human body.

The physiology of the taut band

  1. Neuromuscular endplate dysfunction

    In response to muscular overload, trauma, or prolonged stress, motor nerve endings release acetylcholine in excess at the neuromuscular endplate. This generates continuous local sarcomeric contractions even without voluntary command.

  2. Formation of the taut band

    The continuously contracting sarcomeres shorten and become rigid, forming a palpable cord in the muscle — the taut band. Along this band, there is a point of maximum sensitivity: the contraction nodule.

  3. Local energy crisis

    Continuously contracted sarcomeres consume ATP without rest and compress local capillaries, reducing the supply of oxygen and glucose. A local energy crisis forms that perpetuates endplate dysfunction — a vicious cycle.

  4. Peripheral sensitization

    The energy crisis releases algogenic substances (bradykinin, substance P, serotonin) that sensitize local nociceptors. This explains the hypersensitivity to touch and the spontaneous pain of the active trigger point.

  5. Referred pain

    Sensitization of nociceptors at the trigger point causes signal convergence in the spinal cord with adjacent dermatomes — the phenomenon of referred pain. Each muscle has a specific and reproducible reference map: the upper trapezius refers pain to the temple and behind the eye.

Prevalence: the most common problem you have never heard the name of

a large share
OF PATIENTS WITH CHRONIC PAIN
present myofascial trigger points as a primary or significant contributing cause, according to observations described in the classic work of Travell and Simons — precise population estimates still vary in the literature
1st place
IN THE HUMAN BODY
The upper trapezius is described as one of the muscles with the highest frequency of active trigger points, frequently found in office workers with neck pain
6–8
SESSIONS
is a frequently observed range for significant improvement of trigger points in the upper trapezius and levator scapulae with dry needling; chronic cases may require more
70 years
OF RESEARCH
of studies on trigger points since the pioneering work of Dr. Janet Travell; recent systematic reviews indicate benefit of dry needling on specific outcomes, with variable evidence quality

The referred pain map of the upper trapezius

The upper trapezius has two main trigger points with distinct reference patterns. Trigger point 1 — in the middle portion of the upper fiber, the classic "lump" — refers pain to the side of the neck, temple, and may reach the angle of the jaw. It is frequently the generator of unilateral tension headaches diagnosed as "migraine".

Trigger point 2 — more lateral, near the acromion — refers pain to the nape and behind the ear, and may generate dizziness and tinnitus. When the medical acupuncturist precisely maps these reference patterns and needles the correct points, patients who for years have treated "migraine" with sumatriptan realize that the pain was actually referred from the trapezius — and that the cause is in the shoulder, not in the head.

Recognizing active trigger points in the shoulder and neck

Critérios clínicos
08 itens

Cervical myofascial pain syndrome \u2014 typical presentation

  1. 01

    "Lump" or hardened, painful area in the shoulder or neck identifiable by touch

  2. 02

    Pain that radiates from the "lump" to the head, ear, temple, or arm

  3. 03

    Headache that begins in the shoulder and rises to the head

  4. 04

    Neck stiffness on waking, especially after stress or intense work

  5. 05

    Worsens with prolonged static posture (computer, smartphone, steering wheel)

  6. 06

    Temporary relief with heat, massage, or warm compresses

  7. 07

    Worsens in periods of emotional stress — the trapezius "stores" stress

  8. 08

    Difficulty relaxing the shoulder — a sensation of always raised shoulders

Myths and facts about the "knot" in the shoulder

Myth vs. Fact

MYTH

It is just tension — relax and it will pass

FACT

Active trigger points are structural neurophysiologic alterations with documented dysfunction of the neuromuscular endplate. Without specific treatment — dry needling or precise ischemic pressure — they do not resolve spontaneously. General relaxation helps prevent new points, but does not deactivate already active points.

MYTH

Massage resolves it completely

FACT

Superficial gliding massage usually offers temporary relief, but frequently does not reach the depth of the taut band in a way that modulates the dysfunction of the neuromuscular endplate. Specific ischemic pressure (sustained pressure directly on the nodule for ~90 seconds) tends to be more effective in some cases. Available reviews point to dry needling as one of the techniques with the largest body of evidence for trigger point deactivation, although the methodologic quality of studies varies.

MYTH

Trigger points are the same as acupressure points

FACT

Trigger points are pathologic functional alterations that arise in response to muscular overload — they are not permanent anatomic structures. There is partial overlap with classical acupuncture points (especially the so-called Ashi points), but they are distinct concepts. Trigger point dry needling is a technique based on functional anatomy, independent of traditional concepts.

Janet Travell and the legacy of mapping referred pain

The physician who mapped the world\u2019s pain

Dr. Janet Travell (1901–1997) was the first female White House physician, a position she held during the Kennedy and Johnson presidencies. She treated John Kennedy for chronic low back pain with trigger point injections — when this approach was completely revolutionary. Her decades-long work resulting in the two volumes of "Myofascial Pain and Dysfunction: The Trigger Point Manual" (co-authored with David Simons) is considered the most complete work on the subject. Medical acupuncture incorporates this knowledge into dry needling, using acupuncture needles to precisely reach the points mapped by Travell.

Treatment protocol

Mapping the trigger points
1st visit

Systematic palpation of the upper trapezius, levator scapulae, scalenes, sternocleidomastoid, and suboccipitals. Identification of taut bands and nodules. Reproduction of referred pain patterns to confirm which points are generating the patient’s symptoms. Postural assessment.

Dry needling of primary points
Sessions 1–3

Needling of primary trigger points (upper trapezius, levator scapulae) with search for the twitch response. Local electroacupuncture 4 Hz to potentiate the effect. The local twitch response confirms the correct point and is therapeutic in itself.

Cascade deactivation
Sessions 4–6

Treatment of satellite trigger points (those kept active by the reference of the primary points). Frequently: suboccipitals, sternocleidomastoid, and cervical paravertebral muscles. Progressive reduction of headache and stiffness.

Prevention and ergonomics
Sessions 7–8

Postural and ergonomic guidance (monitor height, keyboard position, posture when using a smartphone). Self-release exercises for the trapezius. Body awareness about the habit of raising the shoulders — especially under stress.

Clinical pearl: the twitch response

Frequently asked questions

FREQUENTLY ASKED QUESTIONS · 03

Frequently Asked Questions

Insertion of the fine acupuncture needle causes minimal discomfort. What can be more intense is the twitch response — the involuntary contraction on reaching the trigger point. This sensation lasts 1–2 seconds and is described as a quick stab or cramp. After the twitch, most patients feel immediate relief of local tension. Post-session pain (muscle soreness as after exercise) may last 24–48 hours and is normal.

Trigger points form in response to factors that have not been eliminated: poor posture at work, chronic stress, poor sleep quality, lack of breaks in repetitive activities. Treatment resolves active points, but without changes to predisposing factors, new points form. That is why the medical acupuncturist always includes ergonomic and lifestyle guidance as an essential part of treatment.

Recent and isolated trigger points usually respond in 3–5 sessions in clinical practice. Chronic trigger points (years of duration), with multiple satellite points and associated central sensitization, may require 8–12 sessions or more, with variable individual response. Periodic maintenance (for example, quarterly) is usually recommended for patients with permanent risk factors (office work, high stress).