According to the Wikipedia Dry needling is just stimulating with needles which are solid filiform needles or hollow-core hypodermic needles.

I have seen lots of websites, including to wikipedia, misleadingly defined as acupuncture treatment is just applying needles on the pain points, Ah Shi, or trigger points.   

Every physician must know that acupuncture is not just stick the needles onto the myofascial tissue.  

Pain points and trigger points are can be included as acupuncture treatment points but without Acupuncture Theory, nobody can make diagnosis and nobody can give the right treatment to the patient.   

Please don’t even thinking about such as "dry needling is similar acupuncture treatment but different modality".

Acupuncture treatment is different form of the medicine. This is not a part of modality.

If you want to apply needles to the patient, please get the Master of acupuncturist degree and license first.