Auricular acupuncture is one of the oldest forms of acupuncture with its origins in ancient Greece, Egypt and China.
Nowadays you can find two directions:
One is the Traditional Chinese Medicine, based on the system of the Meridians.
The other is the direction of Paul Nogier (French doctor 1908 - 1996), which is based on the theory, that there is an interrelation of reflex zones, hence a corresonding interaction between points on the ear and the body.
The whole body is reflected on the ear, like the shape of an embryo turned upside down.
Today Auricular acupuncture is an important tool of diagnostic and treatment in alternative medicine.