It is used to treat certain debilitating conditions as well as arthritis and pain. The heat warms the Qi and Blood in the channels and is therefore useful in the treatment and maintenance of health. Moxa can be held over the acupuncture point or placed onto the handle of an acupuncture needle, allowing deeper penetration of heat. Moxibustion and acupuncture sometimes work synergistically but can also be used separately from each other depending on the ailment.