What Is Dry Needling?
Dry needling is a medical technique that consists of inserting a sterile filiform needle directly into a myofascial trigger point without injecting any substance. The term "dry" differentiates the technique from wet needling, in which an anesthetic or saline solution is injected. The therapeutic target is the taut muscle band and the hyperirritable nodule that characterizes it — and not an acupuncture point of the traditional Chinese system.
The history of dry needling traces back to Dr. Janet Travell, an American cardiologist who served as personal physician to President John F. Kennedy. From the 1950s through the 1980s, Travell, together with David Simons, developed the theory of myofascial trigger points — describing patterns of referred pain, taut bands, and the local twitch response that became the scientific basis of modern dry needling.
In Brazil, dry needling is performed by medical acupuncturists and physicians with specific training in myofascial pain. Because it involves needle insertion into tissues, it is a medical procedure regulated by Brazil's Federal Council of Medicine (CFM).
Difference Between Dry Needling and Acupuncture
Although both techniques use filiform needles, dry needling and acupuncture come from distinct theoretical frameworks and therapeutic targets. Dry needling is based on Western musculoskeletal anatomy and neurophysiology, targeting myofascial trigger points identified by palpation and objective clinical criteria.
Traditional acupuncture is based on the meridian and acupoint system of Chinese medicine, with indications that go far beyond musculoskeletal pain — covering visceral, neurological, and systemic conditions. In the practice of the modern medical acupuncturist, the two approaches frequently complement each other: the same professional may combine dry needling on trigger points with systemic acupuncture to optimize the clinical outcome.
How It Acts on the Muscle
The mechanism of action of dry needling is neurophysiological and occurs in a cascade, from the penetration of the needle into the taut band to the normalization of the dysfunctional motor endplate. The sequence below summarizes the events that lead to pain relief and muscle relaxation.
Needle penetrates the taut band
The filiform needle is inserted directly into the hyperirritable nodule of the trigger point, detected by precise palpation. Mechanical contact with the taut band initiates the therapeutic cascade.
Twitch response (involuntary contraction)
The muscle responds with a rapid, involuntary contraction — the twitch response or local twitch response (LTR). It is the sign that the trigger point has been precisely targeted.
Release of accumulated ATP and acetylcholine
The contraction releases the excess of acetylcholine (ACh) and ATP trapped at the dysfunctional motor endplate — substances that kept the muscle in sustained contraction and contributed to peripheral sensitization.
Reduction of the hyperactive motor endplate
With the release of accumulated substances, spontaneous motor endplate activity (EMGS — electrical motor activity) normalizes. Local pH rises, reducing the acidity that perpetuated pain.
Band relaxation and elimination of the trigger point
The taut band relaxes, the nodule disappears on palpation, and referred pain ceases. Central sensitization decreases with the disappearance of the peripheral source of sensitization.
Clinical Indications
Dry needling has primary indication in musculoskeletal conditions in which myofascial trigger points are identified as a causal or perpetuating factor of pain. The physician evaluates each case individually, since the presence of trigger points must be confirmed by physical examination before the procedure.
Conditions with indication for medical dry needling
- 01
Chronic and acute myofascial low back pain
- 02
Cervicalgia and painful cervical syndrome
- 03
Shoulder impingement syndrome
- 04
Lateral and medial epicondylitis (tennis elbow and golfer elbow)
- 05
Piriformis syndrome with myofascial sciatica
- 06
Tension and migraine headaches associated with cervical trigger points
- 07
Patellofemoral syndrome and anterior knee pain
- 08
Anterior tibialis syndrome and plantar fasciitis
- 09
Post-whiplash myofascial pain (cervical whiplash)
- 10
Temporomandibular dysfunction (TMD) with muscular component
- 11
Postoperative and post-immobilization muscle pain
- 12
Myofascial syndrome of the trapezius and levator scapulae
Treatment Protocol
A medical dry needling session follows structured steps that ensure safety, precision, and efficacy. The complete procedure lasts between 35 and 50 minutes, including evaluation, technique, and post-session instructions.
Medical evaluation and diagnosis
15 minThe physician reviews the clinical history, evaluates contraindications (anticoagulants, pacemaker, pregnancy, local infection), and maps the affected muscles. The diagnosis of myofascial syndrome is confirmed before any intervention.
Palpation and trigger point mapping
10 minSystematic palpation of the relevant muscle groups to identify taut bands, hyperirritable nodules, and referred pain. The physician confirms the presence of an active trigger point before positioning the needle.
Needling with twitch response targeting
10-20 minInsertion of the sterile, disposable filiform needle into the identified trigger point. The physician performs gentle pistoning movements to elicit the twitch response. Each muscle is worked until palpable relaxation of the taut band is obtained.
Rest and post-needling compression
5 minAfter needle removal, light compression at the site to prevent hematomas. The patient remains at rest for a few minutes while the muscle recovers from the twitch response.
Instructions and stretching exercises
5 minThe physician advises on what to expect over the next 24-72 hours (possible post-needling soreness), prescribes stretching exercises for the treated muscles, and schedules the next session according to progress.
Myth vs. Fact
Dry needling is the same as acupuncture — they just changed the name
Although they use the same filiform needle, they are different techniques in theory, target, and mechanism. Dry needling targets muscular trigger points; acupuncture targets acupoints of the Chinese system. The medical acupuncturist masters both.
Anyone trained in a weekend course can apply it
In Brazil, dry needling is a medical procedure because it involves needle insertion into tissues. It requires prior clinical evaluation, diagnosis of myofascial syndrome, and specific medical training to manage complications.
Dry needling hurts a lot — it is unbearable
The pain is transient and brief. The twitch response causes a sensation of cramping or a brief jolt for 1-2 seconds, followed by immediate relief. Most patients describe the sensation as "strange but not unbearable" and report improvement already in the first session.
Scientific Evidence
Dry needling has a growing base of evidence published in high-impact journals. These are the most relevant studies from our library, with links to the full abstracts.
Evidence behind this recommendation.
Selected studies from our library that inform the recommendations on this page. Evidence grade shown when available.
Dry needling has lasting analgesic effect in shoulder pain: a double-blind, sham-controlled trial
“A single session of deep dry needling provides significant shoulder pain relief for up to 6 weeks, superior to sham.”
The effect of dry needling in the treatment of myofascial pain syndrome: a randomized double-blinded placebo-controlled trial
“Dry needling is more effective than sham treatment in relieving myofascial pain, with sustained improvement in pressure pain threshold.”
Efficacy of Dry Needling and Acupuncture in the Treatment of Neck Pain
“Acupuncture and dry needling are safe and effective treatments for neck pain, with moderate to strong evidence.”
Dry Needling in Subjects with Muscular Trigger Points in the Lower Quarter: A Systematic Review
“Dry needling is effective for reducing pain caused by trigger points in the lower body, including the lumbar spine, hip, and lower limbs.”
Beneficial Effects of Dry Needling for Treatment of Chronic Myofascial Pain Persist for 6 Weeks After Treatment Completion
“Pain relief from chronic neck pain by dry needling persists for at least 6 weeks after treatment completion.”
Frequently Asked Questions
Frequently Asked Questions
For most acute myofascial syndromes, 3-6 sessions are sufficient. Chronic conditions involving multiple affected muscles may require 8-12 sessions. The physician reassesses response every 3-4 sessions and adjusts the treatment plan. Many patients feel significant improvement already after the first or second session.
Yes — dry needling is frequently part of a multimodal plan. The physician may combine it with systemic acupuncture, electrical stimulation, prescription of anti-inflammatories, and strengthening and stretching exercises. The combination of dry needling with electrical stimulation is particularly effective in more severe cases.
Yes. Absolute contraindications include: severe coagulopathy, use of anticoagulants without adequate control, infection or tumor at the insertion site, intense fear of needles (severe belonephobia), and patients without capacity to consent. Relative contraindications include pregnancy (avoid abdomen and contraindicated acupuncture points), severe immunosuppression, and lymphedema in the limb to be treated. The physician evaluates all these conditions before the procedure.
It depends on the carrier. Medical acupuncture has been on the ANS list of procedures since 2018 for certain indications. Dry needling, when performed by a medical acupuncturist, may be classified as medical acupuncture. Check with your carrier using the procedure code prescribed by your physician.