This study adopts an experimental design with cluster randomization based on the ward unit. Eligible subjects are diagnosed migraine or tension-type headache nurses who are working in the critical care units and also have nurse license. Before conducting this study, the study has been approved by the institutional review board (IRB). The researcher (co-PI) and research assistances will approach potential participants during the ward meeting and invite them to participate in the study. Potential participants would be informed of the study purposes and interventions process, and be assessed and confirmed their type of headache. After completing the written-informed consent, the interventions will be arranged. In order to control the quality of data collection, PI and co-PI have trained the research assistants. Research training included standardized research process and ethical concerns about collection of research data, methods of approaching eligible subjects, interviewing techniques of data collection.
