Development and preliminary validation of the Danish headache questionnaire

The prevalence of headache disorders is imposing a growing burden on public health. Although most patients are seen in primary care, there is an absence of validated questionnaires designed to describe how clinicians manage patients with headache in primary care. The aim of this study was to develop a standardised headache questionnaire for use by primary care clinicians, covering diagnostic procedures, management strategies, and treatment modalities, and to assess the prevalence of consultations for headache in primary care.

The Danish Headache Questionnaire was developed through a three-phase process: a development phase, a content validation phase via iterative feedback, and a phase to create a generic English version. The Danish Headache Questionnaire includes a survey that covers diagnostic procedures, management strategies, and treatment modalities, and a logbook for tracking the prevalence of consultations for headaches. The questionnaire was tested by Danish chiropractors in primary care from 2020 to 2022.

The Danish Headache Questionnaire underwent several modifications. The survey was expanded to include questions about the Danish profession-specific guideline for managing headaches, different headache types, medical history, radiographic imaging, and potential side effects. The logbook was revised to allow for the documentation of multiple headaches and included a separate form for recording the total number of consultations. The generic version was adapted by removing or adjusting profession-specific terms and questions to suit other clinical environments. The final Danish Headache Questionnaire is available in a generic and a chiropractic-specific format, and was translated to English through a cross-cultural adaptation process.

The Danish Headache Questionnaire has good content validity and is a feasible tool for assessing clinicians' knowledge in managing patients with headaches and gathering data on headache prevalence in primary care. The generic version promotes a uniform approach and enables comparative analysis across different settings. The Danish Headache Questionnaire may be a valuable instrument guiding teaching a standardised assessment and for clinical assessment in primary care. Furthermore, it may have the potential to fill in gaps of knowledge which could improve the management of headache disorders in primary care.