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Headache classification
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Headaches can be classified as primary and secondary. Migraine is a primary headache disorder and it differs from general headaches, as it is accompanied by other symptoms like
»Nausea
»Vomiting
»Throbbing pain in the temples
»Pain behind one eye or ear
»Sensitivity to light and/or sound
»Seeing of spots or flashing lights
»Temporary vision loss
Migraine attacks generally last from four to 72 hours, however in between the attacks there is no sign of any symptoms. Among the common triggers like hunger, stress, dehydration, hormonal changes, hypoglycaemia, food is also an important one. The common migraine triggering chemicals are tyramine, beta-phenylethylamine, nitrates, food additives, aspartame, sulfites and tannin. Foods can trigger a headache within 3 - 12 hours and at most 24 hours.