Typically migranes run in the family however there is absolutely no record of anybody on either side of my family suffering with them. My migraines came on spontaneously around 6 months ago and very intense. I had never had one before this and i now have 2/3 a week. I have had an MRI and blood tests to rule out any possible causes and it is not menstrual related. Any ideas on where they came from if not genetic or from anything underlying?