Mine are pretty severe to life threatening when I get them.
Most of what you read is BS, I can go into more detail if you want some info.
Basically when I get one, I cannot see out of one of my eyes, my arms and legs go numb, and it hurts to move, I've had to dial for help with a pencil in my mouth before lol.
If you want a quick remedy, drink caffeine and water in equal amounts. The caffeine constricts your blood vessels in your head and the water keeps you hydrated. I have prescription medicine for them when they happen. It used to be quite often due to stress from work etc, but it's been a few weeks since I had one.
PM me if you want more info.