1665-5044 1665-5044 S1665-50442020000400124 10.24875/rmn.20000033 México 00 08 2020 00 08 2020 21 4 124 126 1 1988 8 1-96 2 Headache classification committee of the international headache society (IHS) 2018 38 1-211 3 2010 14 321-4 4 2004 103 624-8 5 2016 12 3463-81 6 1983 308 226-7 7 2004 6 45 8 2020 60 864-77 9 2019 1061-4 10 2020 3 1-3 11 2013 41 1218-23 12 2006 113 199-202 13 2008 52 20-5