Surprising causes of migraines

A migraine is a severe, painful headache that is often preceded or accompanied by sensory warning signs such as flashes of light, blind spots, tingling in the arms and legs, nausea, vomiting, and increased sensitivity to light and sound. What causes migraines?Migraines are thought to be caused by changes in the chemicals of the brain. In particular, levels of a type of chemical called serotonin decrease during a migraine. Low levels of serotonin can make the blood vessels in a part of your brain spasm (suddenly contract), which makes them narrower. This may cause the symptoms of aura. Soon after, the blood vessels dilate (widen), which is thought to cause the headache. The reason for the drop in serotonin is not yet fully understood. Although much about the cause of migraines isnt understood, genetics and environmental factors appear to play a role. Some people who suffer from migraines can clearly identify triggers or factors that cause the headaches, but many cannot. Potential migraine triggers include: (1) Allergies and allergic reactions(2) Bright lights, loud noises, and certain odors or perfumes(3) Physical or emotional stress(4) Changes in sleep patterns or irregular sleep(5) Smoking or exposure to smoke(6) Menstrual cycle fluctuations, birth control pills, hormone fluctuations during menopause onset(7) Tension headachesTriggers do not always cause migraines, and avoiding triggers does not always prevent migraines. ...

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