Background Headache is as old as human history and has been able to report, and the first descriptions were found in Greece and Mesopotamia. Objective Our objective was to know the date of the first description of ICHD‐3 headaches, with their respective author. Methods We searched for articles that addressed the historical aspects of primary and secondary headaches and painful cranial neuropathies. Results Twenty‐seven different headaches were analyzed according to the occurrence of their first description, with the respective author and country of origin. Conclusions The knowledge of the first description of ICHD‐3 headaches, with their respective author, showed us how and when the different headaches appeared over the years.

Introduction: Headache attacks may be triggered by several factors, among them odors, especially in migraine patients. Objectives: The aim of this study wasto determine the association between gasoline odor and headache attacks in patients with migraine or tension-type headache (TTH). Subjects and Methods: The study was prospective, cross-sectional, with comparison of groups, using nonrandom sample and convenience. Fifty-two gas station workers diagnosed with migraine or TTH according to ICHD-3 criteria were interviewed on the relationship between gasoline odor and headache. Results: Of the 52 gas station workers with headaches, there were 39 (75%) with migraine without aura and 13 (25%) with TTH. The age ranged from 19 to 50 years, with a mean of 29.5 ± 7.2 years. Osmophobia during headache attacks predominated in workers with migraine (29/39; 74.4%). The onset of headache due to odor exposure occurred in 23/39 (60%) of the workers with migraine and in 2/13 (15.4%) in TTH. These differences were statistically significant (χ 2 = 7.4; p = 0.016). Osmophobia in the absence of pain (period between attacks) predominated in workers with migraine (17/39, 43.6%), but with no statistical value. Conclusions: Gas station workers diagnosed with migraine or TTH may experience osmophobia and headache triggered by the odor of gasoline.