was red, blotchy and kind of C-shaped, although not itchy
or flaky. Since that time, the rash
comes and goes (eg, fades) but hasn't resolved. It sometimes shows up under my nose/ above my mouth, and a couple times across the bridge of my nose, like a butterfly rash. Recently, one cheek has started to fade, but the other is persisting. Any idea what this could be? I have seen two dermatologists; both said eczema although that seems unlikely to me, since it's not itchy at all.