Dry needling

A fine filament needle is inserted directly into a myofascial trigger point — a palpable taut band within a muscle that is tender and refers pain elsewhere. The aim is to produce a local twitch response, after which muscle tone and pain in the region typically drop.

Nothing is injected. It is distinct from acupuncture: the reasoning is anatomical rather than based on meridians, and the target is a specific muscle identified by examination.

Myofascial pain, trigger points in the neck, shoulder girdle, lower back and calf, tension-type headache arising from cervical musculature, and muscle tightness limiting movement after injury.

It is also used adjunctively in tendinopathy and in spasticity management, though the evidence in those areas is thinner than for straightforward myofascial pain.

The insertion is usually not painful; the twitch response is a brief, sharp cramping sensation. Post-treatment soreness is common and usually lasts less than 72 hours 2. It is expected, and it is not a sign that something went wrong.

Where it helps, a change is usually noticeable within the first few sessions. If a short course brings no change, further needling is unlikely to help, and treatment stops rather than continuing.

Bleeding disorders and anticoagulation, local infection, lymphoedema in the limb, and needle phobia. Pregnancy restricts certain sites. Over the thorax there is a small but real pneumothorax risk, which is why technique and anatomical knowledge matter more than the needle itself.

Practitioners here are trained in dry needling specifically. We mention this because the technique is easy to perform and difficult to perform safely, and the two are not the same qualification.

The better evidence is in lateral epicondylitis and plantar heel pain, where meta-analyses show short-term improvement in pain and function 13. For neck and shoulder pain, recent reviews find it no better than other physiotherapy approaches.

We use it where the evidence is reasonable and say so where it is not. It is an adjunct with a defined role, not a treatment that suits every painful muscle.

A treated muscle relaxes for a period; what happens in that period decides whether anything lasts. Stretching and loading immediately after the session are part of the treatment rather than homework.

Needling repeated without that follow-through produces a cycle of temporary relief that is easy to sell and does not accumulate.

Minor side effects are common and serious ones are rare. In a prospective survey of 420 physiotherapists covering more than 20,000 treatments, 36.7% of treatments were followed by a minor event, most often bleeding, bruising or pain during needling 4. Major events, a category that included pneumothorax, excessive bleeding and prolonged aggravation of symptoms, were reported at a rate below 0.1%, about one per 1,024 treatments 4.

An earlier survey of physiotherapists in Ireland recorded 1,463 mild events across 7,629 treatments and no significant ones 5. Both surveys relied on practitioners reporting their own cases, so the figures are estimates rather than exact risks.