There are many factors which can trigger a hemiplegic migraine. These include bright light, feeling strong emotions, stress or even changes in the weather. You may also experience the condition when you've had too much or too little sleep. Sometimes, food and eating habits can also trigger hemiplegic migraines. If you eat too many salty foods, aged cheeses, processed foods, and those which contain high amounts of MSG. Also, skipping meals and consuming too much caffeine and alcohol can trigger the condition.
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