ABSTRACT
A 44-year-old woman became easily fatigued after her second childbirth. Her symptoms improved with shimbuto and ninjinto as a substitute for bukuryoshigyakuto, and the prescriptions were continued. Recently, she suffered from fever, pain around thyroid glands, palpitation, and tremor of hands. She was diagnosed with subacute thyroiditis and prescribed acetaminophen, but the symptoms did not resolve. Based on the clinical signs of inappetence and her thick yellow tongue coating, we suspect the late yang stage and administered shosaikoto. Her body temperature remained below 37 degrees Celsius thereafter, and the pain around thyroid glands disappeared. Out of all the Kampo formulae used in 310 cases of subacute thyroiditis including past reported cases and this case, we found that 53% of the effective formulae were what we call formulae of involving Bupleuri radix that contain both of Bupleuri radix and Scutellariae radix. It is considered that formulae of involving Bupleuri radix are often effective to control the inflammatory process in subacute thyroiditis.