Thanks - this explains exactly what I 'suffer'.
I experience an aura - difficult to define but it's always the same. I have time to get upstairs and lie on the bed.
I can't remember how to turn off my tablet for instance and I can't speak even though I know exactly what I want to say.
I don't experience a headache and just lie down because of the dizziness. Often it clears in five minutes or so.
I was diagnosed with 'petit mal epilepsy' but have never experienced the 'standard' symptoms - this seems much more likely.
I used to have very bad migraines before I took the anti-epilepsy medicine. My attempts to save money by cutting down the dosage are rewarded by these 'episodes'.
I would assume that epilepsy (a stigma) and migraine ('better' than just a headache) are closely related.