Headache, Mental Health, and Use of Medical Resources: Health Diary Study in Japan

To examine the association between poor mental health state and having headache in the Japanese general population, and the association between demographic characteristics and use of medical resources among subjects with headache. The subjects aged 18 through 75 years were chosen from the Japanese general population. We administered a questionnaire to obtain baseline data, an da sked the participants to keep a personal health-diary during October 1–31, 2003. The state of mental health (MH) was examined using the SF-8 Health Survey in the baseline questionnaire. Of the 2371 subjects, 716 had a headache on at least one day during the study period. Of the 716, 52 consulted a physician, 475 used other medical resources, and 189 did nothing about the headache. There wa sa na ssociation between MH score and headache [adjusted odds ratio (OR) = 1.166 (95% confidence interval (CI): 1.010–1.346) for 10-point increment of MH score]. There was also an association between use of medical resources and having a family physician. Poor mental health was associated with headache in the Japanese general population, and one of the predictors of consulting a physician among the headache sufferers was having a family physician whom the subject greatly trusts.