@article{ref1,
title="Exertional headaches with multiple triggers",
journal="Aviation, space, and environmental medicine",
year="1990",
author="Katchen, M. S.",
volume="61",
number="1",
pages="49-51",
abstract="Vascular headaches may occur in up to 20% of the population aged 17-40. One subgroup, exertional headaches, has many specific and nonspecific clinical presentations. Knowing the background events preceding the headache and the exact circumstances of the headache can help make a specific diagnosis. Three cases are presented to illustrate the diversity of triggers and their effect on aeromedical decision-making. The headaches are presented within the recently revised nomenclature for head and facial pain by the Headache Classification Committee of the International Headache Society.<p /> <p>Language: en</p>",
language="en",
issn="0095-6562",
doi="",
url="http://dx.doi.org/"
}