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		 I've had  3 migraines over the past 4 years.   Mostly of the optical type, flashing lights in one eye, or a blind spot followed by a painful headach.  The last one I had was scary, thought I was having a stroke.  Nothing like losing most of your vision in one eye for a few minutes to freak you out.    I believe mine are casued by too much caffeine.   They have all occured within an hour of drinking too much coffee or cokes.  My father gets them from eating raw onions.   I still drink cokes, but in moderation. 
		
		
		
		
		
		
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