I've had it done 2X on my legs and back, for some reason I tolerated it on my legs much better than on my back. It made me feel like Frankenstein, because you really do feel as though your limbs are jumpng around! The person who did it knew how tense I was and kept saying, "Relax, relax, we need an accurate reading", yeah, right! I agree with the majority that it wasn't the needles (very tiny) so much as what they were sending through the needles that was painful. Hoping not to do it a 3rd time...
Terri