You have caffeine withdrawal
Although caffeine withdrawal is commonly known as a migraine trigger, researchers aren’t quite sure what causes the headache. Some believe it may be due to a signalling chemical, called adenosine, whose receptors are typically blocked by caffeine intake. But caffeine headaches don’t normally occur unless the individual has been used to drinking many cups of coffee a day, according to everydayhealth.com. Thankfully, caffeine withdrawal only lasts for a few days, and cutting back on caffeine gradually instead of quitting cold turkey can limit the painful side effects of withdrawal.
You’re genetically inclined to have migraines
Sometimes, all you can do is chalk up your migraines to your genes. A 2013 study at the University of California linked migraines with a certain genetic mutation in humans. It found that a significant proportion of migraine sufferers in the families they studied either had the mutation or were the offspring of a mutation carrier.
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Source: RD.com
