I have a 5 inch long, 3 inch wide (at its widest point) darkened rash (or whatever it is) on my arm that has gotten larger in the last few years. It looks as though it is from the sun (seems to get larger after each summer). It is ever so slightly raised (when I feel it, its slightly higher than the rest of my skin. It does not hurt nor itch. Is this "hyper-pigmentation" common in lupus?

I have a bunch of other lupus signs as seen in my question below (see title, help! I'm alway sick.)