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changes in weather |
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disrupted, poor quality,
too much or too little sleep |
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fragrances such as perfumes
or colognes |
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fumes from cleaning
products, pesticides, and paint |
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dehydration |
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missing meals |
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hormone fluctuations |
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overly loud places |
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flickering light such as strobe lights,
flashing banner ads on web pages, etc. |
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fluorescent lighting |
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very bright lighting or very bright
sunlight |
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the nearly imperceptible flicker of some
computer monitors |
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light glare |
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crowded, stuffy rooms |
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high altitude |
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