The needles used in acupuncture are very thin--varying from .20 mm to .30 mm. Sometimes a client will feel the needle enter the skin, like a bee sting or a pinch. Once the needle is in the body, the client generally feels no pain. If the client feels  a sharp sensation the needle is either readjusted or removed altogether. We do, however, want to have the client experience some kind of 'qi' sensation. This can be dull and achy, tingling or feeling like electricity, hot or cold sensations, or just 'strange'. Sometimes the area can begin to throb. We want your treatment to be well within your tolerance level. Please let us know if you feel uncomfortable in any way.