Dry needling is a non-invasive treatment that reduces muscle pain and improves range of motion by using fine needles to target myofascial trigger points, the knotted muscle tissue behind a lot of discomfort and dysfunction. During treatment, you may feel a mild sting as the needle goes in (usually gone within a second) and a brief muscle twitch as the trigger point responds. Both are normal and expected, not signs that something’s wrong.
Why the twitch matters
Trigger points form when a muscle is overextended or injured and releases biochemicals that heighten pain sensitivity, causing the muscle to contract protectively. Some dry needling sessions add a light electrical current to the needle to help the muscle fire and release more effectively. That twitch response is a sign the treatment is working, not a red flag.
What soreness is normal?
Most patients find dry needling considerably less uncomfortable than a typical injection. Afterward, it’s common to feel a twitch-like ache or mild soreness in the treated muscle, similar to post-workout soreness, which usually fades within 12–24 hours and isn’t cause for concern.
Dry needling, sometimes with the addition of light electrical stimulation, is generally very safe when performed by an experienced provider under sterile conditions. (If you have an allergy to electrode adhesives or a tumor in the treatment area, let your therapist know, since electrical stimulation isn’t recommended in those cases.)
The bigger picture
Research on dry needling shows it’s effective for short-term relief of musculoskeletal pain, largely by reducing pain sensitivity, improving blood flow, and increasing range of motion at the joint. It’s often paired with other physical therapy to speed recovery, prevent re-injury, and build better movement habits going forward.
If soreness after a session feels like more than the normal, short-lived kind, or lingers well past a day or two, let your therapist know so your plan can be adjusted.