A migraine is much more than a headache. As well as the throbbing pain, normally felt on oneside of the head, suffferers can become sensitive to light, smell or sounds. This is why lying in a dark, quiet room can help soothe symptoms. Attacks can last from a few hours to a few days, but you can feel drained for days afterwards.
It's not known exactly what causes them, but at the start of an attack serotonin is released into the bloodstream. This causes changes in the blood vessels within the brain, either making them shrink or widen, possibly causing the pain. Experts are still unsure what causes the serotonin to be released.
Some common triggers have been identified that may lead to a migraine, such as stress or excitement, hormones, over-exercising, food additives- suc as MSG or aspartame- too much caffeine, bright lights and sinus problems. A combination of triggers can be also responsible.
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