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Table 4 (abstract P116). Patients reported NDPH triggers in various published studies

From: 12th European Headache Federation Congress jointly with 32nd National Congress of the Italian Society for the Study of Headaches

Reference Number of NDPH patients No Triggering factor Infection or flu-like illness Stressful life event Trauma /surgery other
Mack 2004, USA 40 (pediatric NDPH) 5(12%) 17(43%)   13(33%) 5(12%)
idiopathic intracranial hypertension, high altitude climbing
Takase 2004, Japan 30 24(80%) - 6(20%) -  
Robins2010, USA 71 38(53.5%) 10(14.1%) 7(9.9%)   6(8%)
menarche, SSRI withdrawal, HPV vaccination
Peng2011, Taiwan 92 65(71%) 3(3%) 24(26%)   
Parkash2012 , India 63 29(46%) 18(29%) 5(8%) 10(16%) 9(14%)
postpartum, medication overuse
Rozen2016, USA 97
Female:65
Male:34
51(53%)
Female: 52%
Male: 53%
Mean age:30.4
21(22%)
Female: 22%
Male: 22%
Mean age:31.8
9(9%)
Female: 11%
Male: 6%
Mean age:28.1
9(9%)
Female:9%
Male:9%
Mean age:63.3
7(7%)
syncope, hormone, toxin and medication, cervical massage
Uniyal 2017, India 55 35(63.5%) 10(18%) 5(9.1%) 5(9.1%)