Headache Related to a Specific Screen Flickering Frequency Band

Kowacs, PA; Piovesan, EJ; Lc, Werneck; Fameli, H.; Silva, H Pereira da

doi:10.1111/j.1468-2982.2004.00686.x

Cited by 21 publications

(21 citation statements)

References 21 publications

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“…In this case, the headache was a photosensitive occipital seizure. A 25‐year‐old computer systems analyst had headaches with photophobia and nausea starting 2 min after working on a computer; he consulted a headache specialist. He worked out that changing the screen frequency from 60 to 75 Hz abolished his headaches (Kowacs et al., 2004). Perhaps he had photosensitive occipital epilepsy, but there was no EEG recording. A 23‐year‐old woman with a history of migraine with aura (onset at 13 years) and epilepsy (juvenile myoclonic) since age 15 years, had a “migralepsy” attack captured on an EEG.…”

Section: Influence Of Bright Lights and Computer Screens; Photosensitmentioning

confidence: 99%

Migraine in the borderland of epilepsy: “Migralepsy” an overlapping syndrome of children and adults?

Trenité

Parisi

2012

Epilepsia

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SUMMARYGowers gave migraine a place in the borderland of epilepsy, justified by many relations and the fact that distinction of these two diseases is difficult. Gowers based his ideas on clinical histories from his patients, and he concluded that in extremely rare instances one may develop while the other goes on. In modern times, patient testimonies of the problem of differentiating migraine from epilepsy are given in health-chat Websites. It shows clearly that distinction between the two conditions is still problematic and that migralepsy is either nonexisting or extremely rare as Gowers noticed.

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Section: Influence Of Bright Lights and Computer Screens; Photosensitmentioning

confidence: 99%

Migraine in the borderland of epilepsy: “Migralepsy” an overlapping syndrome of children and adults?

Trenité

Parisi

2012

Epilepsia

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“…54 Visual field defects have been demonstrated using flickering stimuli in otherwise healthy individuals who have migraine with visual aura. 55,56 Subjects were tested off medications, at least 4 days (mean 31 days) after a migraine attack.…”

Section: Visual Stimuli In the Indoor Environmentmentioning

confidence: 99%

Migraine and the Environment

2009

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Migraineurs often describe environmental triggers of their headaches, such as barometric pressure change, bright sunlight, flickering lights, air quality, and odors. Environmental aspects of indoor space and workplaces are also implicated in migraine experience. Comprehensive migraine treatment programs emphasize awareness and avoidance of trigger factors as part of the therapeutic regimen. As migraine has a substantial economic impact, remediation of correctable environmental triggers may benefit employee attendance and productivity among migraineurs. Few controlled studies in the literature, however, confirm environmental influences on migraine and headaches. Although some are controversial, migraineurs worldwide consistently report similar environmental triggers. This article addresses commonly mentioned environmental triggers with a discussion of their pathophysiology and proposed preventive measures. Objective: To examine the epidemiological evidence for commonly‐mentioned environmental migraine triggers, discuss their possible role in the pathophysiology of migraine and propose preventive measures to avoid or minimize exposure. Background: Migraineurs often describe environmental triggers of their headaches, such as barometric pressure change, bright sunlight, flickering lights, air quality and odors. Environmental aspects of indoor space and workplaces are also implicated in the migraine experience. As migraine has a substantial economic impact, remediation of correctable environmental triggers may improve attendance and productivity among migraineurs in the workplace. Methods: We reviewed the literature addressing indoor and outdoor environmental factors which are commonly implicated as migraine triggers. Results: Although some factors are controversial, migraineurs worldwide consistently report similar environmental triggers. However, few studies confirm environmental influences on migraine and headaches. Research to date indicates that migraineurs have lower thresholds for light‐induced discomfort, sine grating distortion and illusions, noise tolerance and olfactory sensitivity compared to the general population. Conclusion: There are conflicting studies supporting the validity of patient‐reported environmental migraine triggers. Prospective studies are needed to determine the extent that external stimuli influence the migraine process. Decreased thesholds for light, noise, olfactory and visual stimuli in migraineurs may be minimized by modifying the work, home and classroom settings.

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“…Flicker also correlated with other environmental triggers (noise, smells, and sensitivity to bright lights). Flicker has been implicated in the past as a significant migraine trigger, 9 with some authors reporting a direct relationship to flicker frequency 40 and others noting abnormal flicker thresholds in people with migraine, with a variety of experimental procedures. [41][42][43][44][45] In the second analysis on the data from Experiment 1 only, the overall number of illusions for the 3 cpd grating clustered with the visual triggers, suggesting that this grating is a potent visual trigger to migraine.…”

Section: Commentsmentioning

confidence: 99%