ABSTRACT
We attempted to analyze “Kyo-kyo-kuman, ” using biochemical and psychiatric approaches. One hundred and twenty patients (23 males, 97 females) with a mean age of 42.4±16.2 years were evaluated for their levels of Kyo-kyo-kuman, using blood biochemical tests, depression levels as measured by Zung's Self Depression Scale (SDS), and subjective well-being levels as measured by the Subjective Well-being Inventory (SUBI) scale. Ninety-three patients (77.5%) had the Kyo-kyo-kuman. Plasma creatinine level and a score of factor 11 (general well-being-negative affect) of SUBI were significantly lower in patients who had the right Kyo-kyo-kuman than in patients who did not have the right Kyo-kyo-kuman. Scores of factor 9 (perceived illhealth) and factor 11 of SUBI were significantly lower in patients who had the left Kyo-kyo-kuman than in patients who did not have the left Kyo-kyo-kuman. In conclusion, patients under the strong stressors tended to have Kyo-kyo-kuman.