Yes, I'm South African... not the only expat on here either... I've not been diagnosed as yet, although have struggled with iritis for many years now so when the joints started acting up it seemed obvious to follow this line of enquiry as I'm HLA-B27+. Reducing starch and increasing exercise helps me - I'm sad that I had to miss my pilates class tonight, but I'm fluey so didn't think it was a good idea. Swimming is definitely great too.
Anyway, welcome again - you'll find loads of info here (as well as some tasty no-starch recipes!)