What is the mechanism of action for dry needling?

The mechanism of action for dry needling primarily involves the mechanical stimulation of muscle tissue. This technique targets myofascial trigger points, which are hyperirritable spots within tight bands of muscle. By inserting a needle into these trigger points, the practitioner creates a local twitch response, which can help to release tension, improve blood flow, and facilitate the muscle's healing process. This mechanical effect is crucial in alleviating pain and restoring function in the affected area.

In contrast to approaches that rely solely on chemical agents, dry needling does not use medications for pain relief. While acupuncture focuses on specific points along meridians in traditional Chinese medicine, dry needling is based on a more anatomical and physical understanding of muscle and trigger point physiology. The emphasis on physical therapy modalities is also not central to dry needling, as the technique itself involves direct intervention through needle insertion rather than a broader range of treatments. Therefore, the correct option highlights the fundamental aspect of dry needling, which is its direct mechanical influence on muscle tissues.