Yakamashi,
The kampo book I have mentions plenty about headaches, but nothing specifically about migraines. I can give you the headache info if you email me. If you go to a doctor who specializes in kampo (I know a few now), that`s yer best bet. It should be covered by insurance. Kampo (medicate per diagnosis) is different than the American approach to herbs (medicate per disease), which is what I am used to. Kampo/trad. Chinese diagnosis is and will always be a mystery to me, but you should at least give it a try if nothing else has worked for you.
I don`t know enough about accupuncture to say anything one way or the other, `cept that it works well for some people, and doesn`t work well for others. I always thought that it worked better for acute illnesses/conditions than for the chronic (I wouldn`t recommend treating high-blood pressure with accupuncture), but I also know that accupuncture has helped many people with headaches, and it is covered under some insurance plans here.
The favored western medicine is Imitrex. It`s relatively new, and alot of people report favorable results. Unfortunately, it is also very expensive. Again, I can get you clinical info if you email me. The drug is called イミグランhere. The dose is 50 mg, which is the same as in the western world (alot of drugs here are much lower in strength then in the west).
Above all with herbs/kampo, etc. Don`t make the mistake assuming natural = safe for self-treatment, etc. The deadliest poisons are found in nature, and 30-35% of drugs are simply plant extracts. However, unlike Imitrex, most kampo can be bought OTC, once you have an understanding of what works for you, and in what dosages.
Hope that helps. . . I go back in 10 days.