Auriculotherapy (also auricular therapy, ear acupressure, and auriculoacupuncture) is a form of alternative medicine based on the idea that the ear is a micro system, which reflects the entire body, represented on the auricle, the outer portion of the ear. Conditions affecting the physical, mental or emotional health of the patient are assumed to be treatable by stimulation of the surface of the ear exclusively. Similar mappings are used in many areas of the body, including the practices of reflexology and iridology.

According to Nogier, the relevant structures include:

• Helix, the outer prominent rim of the auricle
• Antihelix, the elevated ridge anterior and parallel to the helix
• Triangular fossa, a triangular depression
• Scapha, the narrow curved depression between the helix and the antihelix
• Tragus, the small, curved flap in front of the auricle
• Antitragus, the small tubercle opposite to the tragus
• Concha, the hollow next to the ear canal