We experienced a case of polymyalgia rheumatica (PMR) which responded to Kampo medicine. A 53-year-old female patient first complained of stiffness and pain in the neck. Myalgia was severe and gradually eypanded to both shoulders and both upper extremities. Body weight decreased, and the erythrocyte sedimentation rate (ESR) was greater than 100mm/hour. Because her condition tended to improve when treated with prednisolone 10mg/day, she was diagnosed as having PMR. Her condition was well controlled until the dose of prednisolone decreased. Myalgia then recurred, and the ESR increased to 83mm/hour. The patient visited our outpatient department for treatment with Kampo therapy. Two months after treatment with Sairei-to plus Yokuinin-to, all signs and symptoms disappeared other than the stiff neck. Her body weight showed a tendency to increase. Six months after she first visited us, prednisolone was decreased and then stopped. Her condition still remains well controlled with this Kampo therapy alone. She has no clinical signs and symptoms, and the ESR has improved to 16mm/hour.

In 1984 a 42-year-old female complaining of general malaise and loss of strength in the proximal muscles of the limbs came to the 2nd Department of Internal Medicine for an examination. From her high CPK value, electromyogram, muscle biopsy, etc., she was diagnosed as having polymyositis. Initially she responded well to steroids, but a year later the condition recurred. Treatment with various methods such as the immunosuppressants methotrexate and azathioprine, steroid pulse therapy and plasma replacement were tried without success. In September 1991, the patient's CPK value remained abnormal at about 800mU/ml. According to the Oriental Medical viewpoint, the condition was diagnosed as Kidney yin Deficiency. Rokumi-gan was therefore administered daily (7.5g/day) for a period of 80 days. The CPK value was brought down to the vicinity of 200mU/ml, and the feeling of general malaise and lack of strength in the proximal muscles of the limbs was improved. However, due to the persistence of edema in the lower limbs, the Kampo formula was changed from Rokumigan to Chorei-to, also administered at a dosage of 7.5g/day. This reduced the edema and normalized the CPK value to the 100mU/ml range. During this period, steroid administration was maintained with prednisolone (30mg/day). At present, with the improvement in the CPK value, steroid administration is gradually being reduced.