This butterfly rash that everyone is talking about seems to be one of the major signs of lupus although there are other conditions that can cause it like rosacea.
I get the rash too, but only periodically when I'm having a flare. My rash seems to be different in that, not only heat but also cold affects it. The rash however is the easiest symptom to deal with when I have a lupus rash. The extreme fatigue, headaches, inflammation, tingling and numbness are harder to deal with. The only thing that gives me some relief during a flare is steroid treatment but there are side effects to it.