1, Dry needle is acupuncture, is one kind of techique of acupuncture! It is not a manual therapy techique! So it should not proformed by Physical Therapist. Physical Therapist may use exercise, modelities, cold & heat to help patient rehabilitation, but should not have the right to pierce patient's skin! That's is commom sence; 2, Trigger points are one kind of acupuncture points. So, Dry needle theroy is part of the morden acupuncture theroy; 3, Acupuncture needle is acupuncturists' exclusive tool protected by law. Any one doesn't has acupuncture licese should not use it!