A study of migraine and its effects in a working population.

The objective of this study was to determine the prevalence of migraine and its impact in a working population. A random sample of 476 employees in a chemical industry research and commercial centre took part in this cross-sectional questionnaire-based study. The questionnaire assessed the past-year prevalence of migraine, frequency and duration of episodes, effect on work and sickness absence, use and efficacy of medication and possible 'trigger factors'. Migraine prevalence was 23.2% in women and 11.6% in men. Migraineurs reported significantly more headache-related sickness absence, but did not have significantly more recorded sickness absence overall than did non-migraineurs. Of the migraineurs, 42% had never sought medical advice regarding headaches and most used non-prescription medication. Migraine is common in the study population, resulting in sickness absence and work disruption, although migraineurs have little if any more sickness absence than others. Migraineurs' use of medication is sub-optimal, and occupational health departments could assist them with education and advice.