Dry needling is applied in a similar manner to acupuncture, but there are some differences. With dry needling, the needle is placed in the area where the pain or dysfunction is.
Usually, it will be in an area where there are trigger points which is a concentrated area of muscle tightness.  
The needle, when inserted, helps diffuse the muscle tightness and return the tissues to better function and less pain. Generally dry needling is pain-free.
All of our osteopaths and manual therapists are qualified to dry needle. It is a wonderful technique when applied well, and can really decrease the tension in muscles very quickly.