If you’ve been searching online for help with a stubborn knot between your shoulder blades or a tight band in your low back, you’ve probably run into three similar-sounding phrases: dry needling, wet needling, and trigger point injections. They all involve thin needles and painful muscle knots but the techniques, the people who perform them, and the research behind each are quite different. In our Setauket clinic, patients ask about these differences every week, and the answer matters because it changes how you plan your care, what you pay, and what you should realistically expect.
This guide explains each technique in plain language, summarizes what the evidence actually shows, and helps you decide which conversation to have with which provider. As always, the information here is educational; it is not a substitute for an evaluation with a licensed clinician who can examine you in person.
Key Takeaways
- Dry needling uses a thin solid filament needle (the same kind used in acupuncture) inserted into a myofascial trigger point no substance is injected.
- Wet needling / trigger point injection (TPI) uses a hollow hypodermic needle to deposit a local anesthetic (lidocaine or bupivacaine), sometimes combined with a corticosteroid.
- Acupuncture is a separate, complete medical system rooted in Traditional Chinese Medicine (TCM); it uses filament needles but is guided by meridian theory, not just trigger point anatomy.
- Evidence from a 2017 JOSPT systematic review and a 2023 umbrella review supports dry needling for short-term musculoskeletal pain relief; a 2021 systematic review found both DN and TPI effective for neck pain, with TPI showing a short-term edge for cervical muscle pain.
- Scope of practice, cost, and insurance coverage differ significantly and so does the cumulative safety profile when steroids are involved.
What Is Dry Needling?
Dry needling is a technique in which a clinician inserts a solid, hair-thin filament needle directly into a myofascial trigger point, a palpable taut band in a muscle that refers to pain elsewhere. Nothing is injected. The term “dry” simply means no fluid; the therapeutic effect comes from the mechanical stimulation of the needle and the local twitch response it often provokes.
According to the Cleveland Clinic’s overview of dry needling, the technique is commonly used for persistent muscle pain, headaches, and restricted range of motion. The American Physical Therapy Association (APTA) describes it as a skilled intervention that requires advanced training and is typically performed alongside other manual and movement-based therapies.
At Messina Acupuncture’s dry needling service, we often combine the technique with acupressure and stretching so patients get both the immediate release and the follow-up mobility work that helps the change stick.
How Dry Needling Feels
Most patients describe a brief cramping or “grabbing” sensation when the needle reaches a trigger point sometimes a quick twitch, followed by a wave of relief. Because the needle is extremely thin (often 0.25–0.30 mm), insertion itself is usually barely felt. Mild soreness for 24–48 hours afterward is the most common side effect, which we explain in detail in our article on dry needling side effects patients should know.
What Is Wet Needling / a Trigger Point Injection?
“Wet needling” is a somewhat informal term that usually refers to a trigger point injection (TPI). Here, the clinician uses a hollow hypodermic needle the kind you’d recognize from a flu shot to inject a substance into the trigger point. The most common injectates are:
- Local anesthetics such as lidocaine or bupivacaine
- Corticosteroids (for example, triamcinolone) in selected inflammatory presentations
- Occasionally, saline or small volumes of dextrose
Because a medication is being delivered, trigger point injections sit firmly within the medical/procedural scope of practice. In New York, they are typically performed by physicians (MD, DO), physician assistants, or nurse practitioners, often in a pain-management or physiatry setting.
Dry Needling vs. Cortisone: An Important Distinction
Patients sometimes ask, “Isn’t a cortisone shot the same as dry needling?” They are not the same. A cortisone (corticosteroid) injection delivers an anti-inflammatory drug that has cumulative dose considerations repeated steroid exposure to the same tissue can weaken tendon and fascial structures over time. Dry needling introduces no drug at all, which is one reason clinicians often reach for it earlier in a care plan or when patients prefer to avoid pharmaceutical load.
How Acupuncture Fits In — And How It Differs
Acupuncture and dry needling both use solid filament needles, but they are not interchangeable. Acupuncture is a complete medical system developed over thousands of years within Traditional Chinese Medicine. Treatment is guided by a diagnostic framework that considers meridians, Qi, pulse, tongue, and the whole constitution of the patient, not only the location of a muscle knot.
Dry needling, by contrast, is a narrower Western-derived technique focused on myofascial trigger points and neuromuscular dysfunction. A licensed acupuncturist who is also trained in dry needling can offer both approaches and choose or blend them based on the clinical picture. That is the model we use at Messina Acupuncture’s acupuncture service in Setauket, and we frequently add acupressure in the same visit for patients who benefit from hands-on release.
Who Can Legally Perform Each Technique?
Scope of practice varies by state, and New York is stricter than many. In general terms:
- Licensed Acupuncturists (L.Ac.) perform acupuncture and, where appropriately trained, dry needling using filament needles.
- Physical Therapists (PT, DPT) in many states (including New York under specific conditions), perform dry needling after additional certification; laws continue to evolve.
- Physicians (MD, DO), PAs, and NPs perform trigger point injections and can also legally use filament needles; some MDs obtain medical acupuncture training.
- Chiropractors’ scope varies by state.
If you are unsure about a clinician’s credentials, it is always appropriate to ask. A well-trained provider will gladly explain their licensure, their continuing education, and their malpractice coverage.
What the Evidence Shows
This is a fair-sized and still-maturing body of research. Three sources are particularly useful for patients.
2017 JOSPT Systematic Review — Dry Needling for Musculoskeletal Pain
The Journal of Orthopaedic & Sports Physical Therapy 2017 systematic review synthesized randomized trials of dry needling for various musculoskeletal conditions and concluded that DN was more effective than sham or no intervention for short-term pain relief. Mid- and long-term effects remain less clear due to heterogeneous follow-up.
2021 Systematic Review — Dry Needling vs. Trigger Point Injection for Neck Pain
A 2021 systematic review (PMID 34114639) directly compared dry needling and trigger point injection in patients with cervical myofascial pain. Both were effective overall. In the short term, TPI showed a modest edge for some outcome measures in cervical muscle pain; at longer follow-up, the two approaches were broadly comparable. This is useful to know if you’re deciding between them for a neck-pain presentation and it aligns with what we often see in our back pain and neck pain patients in Suffolk County.
2023 Umbrella Review — Promising but Honest About Limits
The 2023 umbrella review (PMC9917679) pooled multiple systematic reviews and rated the overall quality of evidence as low to moderate. Translation: results are encouraging, particularly for short-term pain and function, but we still lack large, well-controlled head-to-head trials with long follow-up. That honest framing is what you want from a clinician not overpromising.
What Conditions Is Each Technique Used For?
- Dry needling myofascial neck and upper-back pain, tension-type headaches, piriformis syndrome, plantar fasciitis, IT-band tightness, post-surgical scar tissue, and many overuse injuries.
- Trigger point injections refractory myofascial pain syndromes, fibromyalgia tender points (selected cases), post-traumatic muscle spasm not responding to conservative care, and pain that needs a fast anesthetic window to allow movement or physical therapy.
- Acupuncture a far broader list including pain, headache, insomnia, nausea, stress, digestive complaints, and reproductive health, because it treats systemic patterns rather than only muscle tissue.
Session Experience, Sensations, and Needle Differences
A filament needle used in dry needling or acupuncture is typically 0.20–0.30 mm in diameter — roughly the width of a few human hairs. A hypodermic needle for trigger point injection is often 22–27 gauge, which is thicker because it needs a lumen to carry fluid. Patients generally notice the injection more than a filament needle insertion, and the post-procedure sensation is different: injections may include brief burning from the anesthetic, while dry needling more often produces muscle soreness similar to after a hard workout.
Cost and Insurance Coverage
Costs vary regionally, but a few general patterns hold on Long Island:
- Dry needling is often billed as part of an acupuncture or PT visit. Coverage depends heavily on plan; many commercial plans now cover acupuncture for specific indications, but dry needling codes may be handled differently.
- Trigger point injections are medical procedures with specific CPT codes and are more frequently covered, especially when documented for chronic myofascial pain. Copays for in-network pain-management visits apply.
- Always verify benefits before treatment. Our front desk at 631-403-0504 can help you understand what’s likely to be covered for acupuncture or dry needling at our office.
Safety Differences You Should Know
All three techniques are low-risk in trained hands, but the risk profiles differ:
- Dry needling and acupuncture most common events are transient soreness, minor bruising, and brief fatigue. Serious adverse events (pneumothorax, infection) are rare when clean-needle technique and anatomic training are followed.
- Trigger point injections with anesthetic add the small risk of local anesthetic reaction and, very rarely, systemic toxicity.
- Trigger point injections with corticosteroid carry cumulative-dose considerations: repeated steroid exposure to the same tissue can thin or weaken tendon and fascia, contribute to skin atrophy, and in diabetic patients transiently raise blood glucose. This is why thoughtful physicians cap the number of steroid injections per year and site.
What Messina Acupuncture Offers in Setauket
Our clinic does not provide trigger point injections that are performed by MDs and DOs in pain-management practices. What we do offer is an integrated approach that combines acupuncture, dry needling, and acupressure in the same visit when appropriate. For many Long Island patients with neck, back, or shoulder pain, that combination addresses both the local trigger point and the broader pattern without adding pharmaceutical load. When an injection-based approach looks like a better fit, we are happy to coordinate with your physician.
When to See a Licensed Acupuncturist
Consider booking a consultation if you have:
- Persistent muscle knots that return after massage or stretching
- Tension headaches or neck pain that isn’t responding to home care
- A recent injury where you want a conservative first step before considering injections
- A goal of reducing medication load while still getting real relief
If your pain is severe, progressive, accompanied by numbness, weakness, bowel/bladder changes, or follows trauma, please see your physician or go to urgent care first — needle techniques are not a substitute for emergency evaluation.
Frequently Asked Questions
Is dry needling the same as acupuncture?
No. They use similar filament needles, but acupuncture is a complete TCM system with its own diagnostic framework, while dry needling is a Western technique aimed specifically at myofascial trigger points.
Which hurts more — dry needling or a trigger point injection?
Experiences vary, but many patients report the brief burn of anesthetic in a TPI is more noticeable in the moment, while dry needling causes more next-day muscle soreness. Neither should cause sharp, lasting pain.
Can I do both dry needling and trigger point injections?
Yes, many patients benefit from a combined plan coordinated between an acupuncturist and a physician. The timing matters we generally stagger sessions so tissue has time to respond.
How many sessions will I need?
For dry needling, many patients feel meaningful change within 3–6 visits. Chronic patterns may need longer. Your provider should re-evaluate every few visits and adjust the plan.
Is dry needling covered by insurance in New York?
Sometimes. Coverage depends on your plan and how the visit is coded. Call our office or your insurer to verify before booking.
Ready to Book Your Appointment?
If you have stubborn muscle pain and want to talk through whether acupuncture, dry needling, or a combined approach makes sense for you, we’d be glad to help. Call 631-403-0504 or request an appointment online. Our office is at 100 N Country Road, Setauket, NY 11733, serving patients throughout Stony Brook, East Setauket, and Suffolk County.