Hi. I am searching the net with the question "skin rashes that look like scatches" and came across your question. I have the same symptoms (and I have taken photos) but they develop into bumps and sores. These come up without any notice. A and E (!) had no idea and the doctor just wanted to prescribe steroid cream. I have therefore attempted to find out myself and I think it is atopic dermatitus caused by poison Ivy or poison oak. However nothing seems to prevent it from re-occurring.