Typically, Japanese Kampo doctors use formulas classified for treating blood stasis, to treat pain. However,there have been few reported cases where pain was treated with formulas classified for treating qi stagnation. Here, we report a case of right lateral epicondylitis in a 48-year-old woman who was treated with a focus on qi stagnation and with uyakujunkisan. She underwent conservative treatment at an orthopedic clinic for ten months, but her pain was not relieved. Hence, she opted for Kampo treatment. She was in a state of melancholy, felt heaviness throughout her body, and had irregular menstruation. These symptoms were mainly related to qi stagnation, and hence, we chose uyakujunkisan without white silkworm, but with aconite root. One month later, the stiffness in her shoulder improved and the pain was reduced. Magnetic resonance imaging taken 2 months later showed an improvement in the lesion. Nine months later, her menstruation became regular, and 11 months later, the pain had almost completely resolved and she could comfortably perform activities of daily living. Uyakujunkisan is introduced in the classical textbooks, and we interpret uyakujunkisan as a formula that can treat pain with qi stagnation. In Kampo treatment, effective pain treatment involves consideration of not only local blood stasis but also general qi stagnation.

Background/Aims: Symptoms of irritable bowel syndrome (IBS), a common gut-brain interaction disorder, deteriorate patients’ quality of life and increase medical needs; therefore, IBS represents a significant global burden. The estimated global prevalence is approximately 10%; however, accumulated evidence shows international heterogeneity. In this study, we have described and compared the prevalence of IBS in 3 East Asian countries: Japan (Tokyo and Fukuoka), China (Beijing), and South Korea (Seoul). Methods: We conducted an internet-based cross-sectional survey of the urban population aged > 20 years in the abovementioned countries. We recruited equal numbers of age- (20s-60s) and sex-matched participants (3910 residents). IBS was diagnosed according to the Rome III criteria, and the subtypes were analyzed. Results: The overall prevalence of IBS with 95% CI was 12.6% (11.6-13.7); the prevalence was significantly different across Japan, China, and South Korea (14.9% [13.4-16.5], 5.5% [4.3-7.1], and 15.6% [13.3-18.3], respectively) (P < 0.001). Furthermore, 54.9% of patients were male. IBS-mixed was the most prevalent subtype; the prevalence of other subtypes varied. Conclusions The overall prevalence of IBS in the 3 countries was slightly higher than the global prevalence, and it was significantly lower in China than in Japan and South Korea. IBS prevalence was the highest and lowest among individuals in their 40s and 60s, respectively. Male individuals had a higher prevalence of IBS with diarrhea. Further studies are needed to elucidate the factors associated with this regional heterogeneity.