Association between screen time and self-reported severe headache or migraine: a nationwide population-based study

AbstractBackground: Headache disorders are widely prevalent and impose a considerable economic burden on individuals and society. Recent studies have shown an association between screen time and self-reported headache or migraine in children and adolescents, but the association remains unclear among the adult population in the US.Methods: A cross-sectional analysis was conducted utilizing data from the 1999–2002 National Health and Nutrition Examination Survey (NHANES), including participants aged 20 to 85 years. Screen time was categorized into less than 4 hours per day (