I started to have frequent severe migraines the last years of university (about 25 years ago).
Some of my migraines were associated with epilepsy. Some seizures would end in very severe migraines, while some partial seizures would magically stop a migraine in an instant.
Painless migraines with aura often confuse my doctors, as do some of my partial seizures. During one painless migraine triggered by a nurse's perfume, my doctor demanded that I take an ambulance to a distant ER. I refused and had a legal conflict with the doctor. Before then, in 2006, I had an extra long, blinding migraine after a cluster of seizures with secondarily generalized tonic-clonic seizures, and the month long migraine turned out to be frontal subdural hematoma that required emergency surgery. ER often tells me my partial seizures are just migraines, so I suffer many doctor versus doctor battles also.
Anti-epileptic Drugs (like Dilantin, Keppra, Tegretol, Topamax) help for a short while with my migraines, but the migraines quickly build immunity to the drugs if taken more than on rare occasions. Most migraine specific medications aggravate epilepsy, and never worked well for me anyways.
I like Oliver Sacks' book "Migraine" with full view often at books-dot-google with the book search "Oliver Sacks migraine 1985" and it mentions the paradoxical migraine warning of "feeling dangerously well" prior to an attack.
Tadzio