Quick heads up on my biopsy

I just got an email from my derm about my biopsy results. She says that it looks most likely like atopic eczema / neurodermatitis.. but there is no definite diagnosis, as I would have thought. Also I'm not sure what she now thinks about treating it and if Psoriasis is completely out of the question. I guess it isn't. And they might have similar treatments (at least regarding topical ointments).

In her email she's also talking about a possible "viral inflammation/infection" (not sure if that's just another guess or if that's actually something that she saw from the biopsy result) and her histologist suggesting to look for certain viruses in my blood. I will probably give blood on monday and see where that goes.. I've also replied asking what she thinks about phototherapy and if it's something I should try. Tweet