How are acupuncture needles different from getting a shot?
The needles that you are familiar with are much different then the needles used in acupuncture. Acupunture needles are so thin that many would be difficult to insert without a support tube. The result being that they are very comfortable. Once the needle are inserted, you generally forget they are there. Acupuncure needles are not hollow; no fluids passes through them. So all the effect they produce are a result of the needles interacting with the body at the acupuncture point. When you get a shot, the needle is just a means of getting the medicine into your body.