Ear acupuncture is applied in many cases to treat a diverse array of symptoms. It has been shown for centuries to be very useful for the treatment of, among other things, all kinds of addiction problems (such as stopping smoking), but also for severe mood swings, obesity, general pain symptoms etc.
Again this technique is based upon a holistic approach, in which specific points of the ear represent the whole body and the human being in all its aspects: spiritual, emotional, physical and mental. Modern studies have shown that puncturing the ears stimulates endorphin production, which give a general feeling of wellbeing.
See here the video fragment: