Lots of folks who are newly diagnosed with rosacea express confusion about what they can and cannot eat, so I thought I'd share what works for me, in hopes that it helps somebody else.
From my reading I've learned that rosacea can be triggered by many things. Mine was triggered by peri-menopause approaching, ie.estrogen withdrawal. Others report rosacea after thyroid troubles, heavy use of accutane, and too many years of too much sun. Food doesn't seem to be a cause but it's certainly a trigger, and it's one that I can control.
I'm lucky that I don't get migraines, but I realized early on that certain foods which trigger migraines (in people vulnerable to migraines) also trigger flushing, in me.
This makes sense when you think about it, because migraines are apparently a result of inappropriate vasodilation of your cerebral blood vessels-- and flushing, of course, is a massive and inappropriate vasodilation response in your facial skin.
Apparently some foods are vasoactive -- they cause blood vessels to dilate -- on a small sensitive subset of the population, and I'm one of them.
So here is what I flush to, in case it helps you.
http://www.npr.org/programs/morning/fea ... ggers2.pdf
Keep in mind that food triggers are sometimes hard to spot. They're cumulative, which means that any food that you're sensitive to might not trigger you on any particular day, if it doesn't bump you up over your threshold into the point where you'll flush. I've noticed it can take up to two days for some foods to cause flushing, while others cause trouble immediately. Sugar causes immediate trouble in me, and ice cream's the worst. Like heat, it will cause big flushing, quite rapidly.
You can google "Buchholz diet" or "migraines and food" if you want to learn more.
Hope this helps.