This is more of a simple trick that helps in a pinch, if you don't have your steroids on you, or for whatever reason you can't get home soon enough. It'll buy you some time, and in some case is enough to avoid meds. Ive never heard anyone discuss it!
Just stand with your back against the wall and bend at the waist. Legs straight, head as far down as you can get it, let it hang for at least 2 minutes. Pretend you're stretching your legs or something 😉 But do stand back up sloooowwwllyyy. That's it!!
I'm not talking about yoga here, tried once during a migraine and that might help to prevent, but it makes an active migraine beyond unbearable.
I have hemiplegic and basilar migraines and this has stopped me from fainting many times. It cuts all the other symptoms in half for an hour usually so I can make it home or to a hospital.