Most people are surprised to learn that acupuncture is not painful. Patients may not even feel the needles. Sometimes local sensations where the needles are placed can include: warmth, electrical sensation, heaviness, relaxation, aching or tingling. These sensations are known as “de qi” and are considered a good sign. If the needle is placed and you feel a sharp sensation, the needle may be removed or placed again and this is also not dangerous.