Reiki is a Japanese form of alternative medicine called energy healing. Reiki practitioners use a technique called palm healing or hands-on healing through which a "universal energy" is said to be transferred through the palms of the practitioner to the patient in order to encourage emotional or physical healing.
Reiki is a form of alternative therapy commonly referred to as energy healing. It emerged in Japan in the late 1800's and is said to involve the transfer of universal energy from the practitioner's palms to their patient. Energy healing has been used for centuries in various forms.