“…Diagnoses of primary headache subtypes change over time due to overlapping symptoms and possibly related to maturation [17] . Of those who had become parents, 52% have in their present or previous families had one child or more who had developed recurrent headache, probably of the migraine-type [21] . Risk factors that predict persistence and unfavourable clinical course include headache onset early in life, frequent headaches, increasing time between headache onset and first examination, female sex, maternal history of headache, comorbid psychiatric illness, poor sleep and stress, medication overuse, and poor self-efficacy for managing headaches [17, 21-22, 48, 52, 56, 99, 101-102] .…”