Fig. 3From: Results of a Web-based survey of 2105 Greek migraine patients in 2020: demographics, clinical characteristics, burden and the effects of the COVID-19 pandemic on the course of migraineAnswers to the question: “How many hours does a migraine attack usually last if you do not take any painkiller or if it does not work?". Differences between patients with “migraine” diagnosis from medical professional and patients with no official diagnosis but clinical migraine symptomsBack to article page