I have these big red itchy splotches on me, what are they??? About a week and a half ago I started getting these little bumps on the side of my torso. They look like bug bites, and they itched like them. Then they got bigger and bigger and started spreading from my neck down to my ankle. The biggest ones are the size of half dollars and some are oddly shaped. They've begun getting swollen and kind of dry and flaky. I've been using cortisone but it's not working. I have mild psoriasis but it's never been like this... ever. I don't think it's an allergic reaction, I haven't changed any products or habits. I also may have asthma if that may have something to do with it. I just want to know what it is and what I should do about it.

Summarized question: What are the big red itchy bumps on me?