Skin condition with odd symptoms

I am a 24 year old female with no known health problems nor necessary prescriptions. When I was 14 I developed a red rash-like condition that occurs only on my forearms. (rash comes and goes) The bumps absolutely do not itch. I was diagnosed(at 14) as having Eczema within about 2 minutes of showing my doctor the bumps. He was however concerned that the bumps do not itch and cause a spotty lack of pigment in the irritated area resembling little white spots or dots. I am Caucasian so the loss of pigment isn't too distracting on my pale skin. I am writing because I have had a recent outbreak that is more serious in appearance and is traveling farther up my arm. The bumps are red, more clustered and have blisters or scabs over them. Still though, no itching. The loss of pigment this time seems more obvious and the "rash" more pronounced. The irritated skin has a rough, bumpy texture. Should I see a doctor about this? Is it in fact a non-itchy pigment robbing Eczema? What the heck?