I have infrequent massive migraines. Similar after-effects to those you mention. Dr. used to think they might be mini strokes.
After episodes I have to stay in non-stressful situations, eat well, take moderate exercise (slow walks) and use natural calmatives.
Get a couple of massages, NOT deep tissue or rough ones, but maybe hot stone massage. Hydro therapy is very helpful.
Talk therapy is an option, it’s probably OK-ish.
I’ve heard acu-puncture (however that is spelled :) ) helps for some people.
Have you had a spinal tap done during any of your episodes. A good Dr. might order one to check the white cell count in your spinal fluid to eliminate the possibility of CLL Leukemia, especially if neurology can find nothing wrong...
I’m willing to try anything. I’ll mention this, too.
I’ve read recently that sleeping with one’s head slightly higher than the rest of the body (a gentle slant of the upper body) can eleviate migrane headaches. Would it prevent another stroke? Your guess would be as good as mine.
But I look at it this way: it can’t hurt. Our heads aren’t used to being flat with the rest of our body. Taking the pressure off certainly shouldn’t hurt.