I have a rash that started on my left arm then my right arm then my chest, torso, my back n the top half of my legs, its so itchy. have had it for 2 months now. all the pics I've looked up dont compare to what I have. I need to know what I'm dealing with. My boyfriend started getting it 1 month after me, it feels at time like bites but when we look at the bite at the time we don't see anything biting, , he's not as bad as me. we can't figure it out. can you help?