I don't know of anything specific to Lupies as far as headaches are concerned. Healing Well does have a forum specifically for Migraines - I imagine reading over there will give you lots of hints for avoidance.
One thing that does come to mind is stress -- we tend to be even more sensitive to stress than the rest of the population - keeping low stress helps me keep headaches at bay.
Lynnwood, Lupus & Sjogren's Moderator, Dx: 2000DIAGNOSING LUPUS & HW's LUPUS 101
"Life is far too important to be taken seriously." - Oscar Wilde