A seminar was held with “the development of research on auricular acupuncture” as the main theme. In this seminar, the recent development of auricular acupuncture in Japan and abroad, its action mechanism, and clinical effects were reviewed, and the findings were comprehensively evaluated.
Concerning basic research on the effects of auricular acupuncture on obesity, the relationship between the auricle and hypothalamo-autonomic system and individual variation associated with differences in the condition of patients receiving the treatment were reported. As for the action mechanism, leptin expressed in white adi-pose tissue (WAT) due to acupuncture stimulation of the auricle was reported to bind to leptin receptors (Ob-R) in both peripheries and the center and suppress food intake.
Concerning clinical effects of auricular acupuncture, the results reported in Japan indicating its effectiveness for the treatment of obesity were presented. However, no overall conclusion was reached, because papers published abroad were not consistent in the therapeutic procedure or evaluation parameters. Auricular acupuncture appeared to be clinically effective for analgesia and the treatment of drug addiction but ineffective as an anti-smoking treatment.

A 66-year-old woman presented with a choking feeling in her throat. She was hospitalized three times and started nasogastric tube feeding one year before. She was diagnosed as somatic hallucination by a psychiatrist and started antipsychotic medication. She was admitted to our department in September due to worsening of choking sensation. Her body weight was 29 kg, and she was significantly lethargic and undernourished, and had difficulty in moving, parkinsonism, cognitive dysfunction, and apathy. She was considered to be in late yin stage pattern and started on tsumyakushigyakuto, which enabled her to walk with a walker, but her choking sensation did not improve. Two days after the conversion to yokukansankachimpihange, her speech and smile increased, and her motivation improved. After the switch to the extract of yokukansankachimpihange, the fullness and discomfort in left chest and hypochondrium disappeared, and she was able to take jelly and walk by herself. She was transferred to other hospital in January of the following year. Three months after the transfer, she was able to take enteral nutrition by herself and her weight increased to 37 kg. Eight months later after the transfer, she was able to take solid food orally and her weight increased to 41.5 kg. Yokukansankachimpihange may be useful for treating the patients with somatic hallucination and apathy.