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- Title
Interictal Pattern-Induced Visual Discomfort and Ictal Photophobia in Episodic Migraineurs: An Association of Interictal and Ictal Photophobia.
- Authors
Chu, Min Kyung; Im, Hyoung-June; Chung, Chin-Sang; Oh, Kyungmi
- Abstract
Background.- Pattern-induced visual discomfort and photophobia are frequently observed symptoms in migraineurs. The presumed pathophysiologic mechanisms of pattern glare and photophobia seem to overlap anatomically within the central nervous system. Objective.- To assess the relationship between interictal pattern-induced visual discomfort and ictal photophobia in episodic migraineurs. Methods.- We compared pattern-induced visual discomfort among 3 groups: controls, migraineurs without ictal photophobia (MwoP), and migraineurs with ictal photophobia (MwP). Photophobia was assessed with a validated photophobia questionnaire. Visual discomfort tests were performed using 3 striped patterns with different spatial frequencies. After viewing the patterns for 10 seconds, subjects were asked to report the severity of visual discomfort using 4 scales (none, mild, moderate, and severe) and using a 0-10 visual analog scale (VAS). We compared the proportion of subjects choosing moderate-to-severe discomfort and the median values of VAS scores for each pattern among the 3 groups. Results.- We enrolled 35 controls, 18 MwoP, and 44 MwP, and there were no significant differences in clinical features among the 3 groups. MwP reported a significantly higher proportion of moderate-to-severe discomfort and higher median VAS scores than the controls and MwoP did. The intensity of discomfort increased with higher frequency of visual stimuli. Conclusions.- We conclude that MwP experienced more severe pattern-induced visual discomfort as compared with the controls and MwoP.
- Subjects
KOREA; ANALYSIS of variance; CHI-squared test; INTERVIEWING; MIGRAINE; PROBABILITY theory; STATISTICS; VISION disorders; DATA analysis; VISUAL analog scale; DATA analysis software
- Publication
Headache: The Journal of Head & Face Pain, 2011, Vol 51, Issue 10, p1461
- ISSN
0017-8748
- Publication type
Article
- DOI
10.1111/j.1526-4610.2011.02010.x