Hi there
I started getting flare ups on my face about two year ago and have finally found something that works! It is a cream by Barefoot botanicals, i get it from local health store, it is the SOS rescue face and body cream. I apply it in the morning and at night and it works wonders for me. It has vrious natural oils in it, not sure which in particular works but it does the trick. Worth a go as it is a lovely moisturiser if nothing else, all natural organic, no parabens etc.
Also, you mentioned your sugar levels, I am not sure if your reading is high, but I went to a alternative chap for diet advice and high processed sugars were one of the things I had to cut out and that also helped, not sure if that is also connected you your flare up? I seem to tolerate dairy well, but as soon as I eat too much sugar/alchohol I flare up
Anyway, good luck, it is a right b*gger isn't it?!!!!