Auriculotherapy

The oldest record of auriculotherapy possibly dates back to 2500 BC to The Yellow Emperor's Classic of Internal Medicine (ca. 100 BCE), though it was limited to bloodletting and cauterization.[5] Chapter 20 mentioned phlebotomy of a distended vein in the ear to relieve tightness in the costal margin and Chapter 63 refers to blowing air into the ear with a tube to save an unconscious patient.[5]

In 1957, French neurologist Paul Nogier proposed a standardized approach.[5][6] Nogier developed a phrenological method of projection of a fetal Homunculus on the ear and published what he called the “Vascular Autonomic Signal” which measured a change in the amplitude of the pulse.[6] That mechanism would only produce a signal upon the introduction of new information to the electromagnetic field of the patient.[6] Nogier cited a 'principle of matching resonance' which he could use the vascular autonomic signal to detect the active points of the auricular microsystem.[6]

Nogier's Auricular acupuncture was introduced to China.[7]

Richard Niemtzow in 2001 developed a procedure he coined Battlefield Acupuncture in an attempt to research more efficient relief for phantom limb pain and chronic pain for veterans.[3] Battlefield Acupuncture involves placing gold aiguille semi-permanent needles at up to five sites in the ears. In 2018, the United States Department of Defense, the Veterans Center for Integrative Pain Management, and the Veterans Health Administration National Pain Management Program office completed a 3-year, $5.4 million acupuncture education and training program, which trained over 2800 providers in Battlefield Acupuncture.[8]

According to Nogier, the relevant structures include:[9]

• 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

Nogier claims that various points located on the ear lobe are related to the head and facial region, those on the scapha are related to the upper limbs, those on the antihelix and antihelix crura to the trunk and lower limbs and those in the concha are related to the internal organs.[9]

A controlled crossover study of 36 patients failed to find any difference in two experiments. The study concluded that auriculotherapy is not an effective therapeutic procedure for chronic pain.[10]

The first experiment compared the effects of stimulation of auriculotherapy points versus control points.[10] A second experiment compared the stimulation of these points with a placebo control of no-stimulation.[10] Using the McGill Pain Questionnaire, pain was not decreased at the points compared to the controls. Patients' reports of pain relief after auriculotherapy are due to placebo effects.[10]

Also, during electrical stimulation, patients sometimes reported the occurrence of new pain in an unrelated part of the body.[10] These referred sensations reinforce the pain relief produced by the placebo effect and may be part of the reason why the belief in auriculotherapy persists.[10]