Migraine disability and its recognition and assessment

The main aim of this thesis is to investigate the clinical significance of headache-related disability; the clinical importance of assessing disability, the means of recognising the patients with severe disability and the development of new ways to assess headache-related disability and their utility in clinical practice. The main methodology used in the thesis was critical reviews of the literature and open, naturalistic studies designed to mimic the situation in everyday primary care clinical practice.