Objective: This article reviews current headache disability measures and clinical need, as well as presenting the rationale for a new measure addressing work-related disability in migraine patients and the steps devoted to this aim.
Background: Episodic and chronic migraine (EM and CM) constitute an enormous economic burden to societies, and the vast majority of this burden is attributable to indirect costs, ie those associated with productivity loss. A measure of work-related disability is therefore needed to quantify the impact of EM and CM on patients' ability to carry out work tasks.
Methods: We briefly present the advantages and disadvantages of the disability measures that have been most commonly used for this purpose and the rationale for developing a new measure.
Results: The entire process of development of HEADWORK, a questionnaire designed to assess work-related disability, is presented together with short-term sensitivity to change.
Conclusions: Current headache disability measures need improvement. HEADWORK is a valid, reliable, and sensitive questionnaire to address the amount and severity of work-related difficulties and of the factors contributing to such difficulties. HEADWORK is suitable for daily clinical practice, epidemiological research and for clinical trials, and potentially to define work-related disability weights for the calculation of migraine indirect costs.
Keywords: HEADWORK; chronic migraine; disability evaluation; employment; episodic migraine; work.
© 2020 American Headache Society.