Many reasons: Genetic predispositions plus trigger often equals migraine. If your brain cells are hyperexcitable and prone to migraine it's like your brain is a stick of dynamite and whatever trigger (stress, hormones, lack of sleep, weather, certain foods etc.) lights the fuse and boom you get a killer headache.
Answered 5/11/2013
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5 doctors weighed in across 3 answers
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
4 doctors weighed in across 2 answers
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