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> If you have ever experienced a migraine,

... do you mean that there are some people who don't ?

Not sure if you are being serious or not, but yes, not everyone gets migraines. From the first line in the linked story:

>Migraine affects one in seven of the world’s population – approximately a billion people

ah, after some more research I did not know that "migraine" was a specific form of headache instead of a synonym for it.