Migraines & Wine

[Sydney2]

When I first started drinking wine, I learned that drinking Merlot would trigger a severe migraine attack. I was told that this was due to the tannins and would be true of all red wines but I never actually researched it. Does anyone know if that is true? I've also heard that sulfites could also be the culprit. I have avoided all red wines out of fear of triggering one of my attacks, but have grown really curious about them and would like to taste a few. Are there any generally 'safe' red wines for migraine sufferers? I am particularly curious about Pinot Noir. Any advice anyone can provide is greatly appreciated.

Thanks!
Syd