“…Due to easy access to electronic devices more time is spent with them and, as a consequence, negative impact on adolescents' health have been reported in the literature, such as sleep changes, tiredness, anxiety, depression, overweight, de-ORIGINAL ARTICLE DOI 10.5935/1806-0013.20150049 creased levels of physical activities, decreased concentration, musculoskeletal pain, stress and headache [3][4][5][6][7] . Headache, pointed as an increasing problem among children and adolescents and which is possibly related to changes in lifestyle and stress-related factors 8 , has been highlighted by some studies as a major complaint among adolescents due to the excessive use of electronic devices 6,9 . Recently, Brindova et al 1 have observed that adolescents referring watching TV for more than three hours per day have higher chances of reporting physical and psychological complaints, including headache.…”