Rash of all Rashes

So painful, on fire and so itchy. I went to a dermatologist and he was so rude and arrogant. He said it was my perfume but wouldn't really listen to anything else I had to say. He put me on some medication and prescribed a steroid cream but nothing was helping. My rash then began to become one big welting blister. It then began to spread out towards my shoulders, around the back of my neck up to my hairline, up to my jawline down my chest and stomach, down my right arm to my right hand. So weird and random. No steroid creams worked and so I would lay ice packs all over my body to ease the itching a little.  I went to another dermotologist who said it definitely wasn't my perfume. He took a culture of it from the back of my neck right before thanksgiving to send to a pathologist. A few days later it actually started to feel better. The blistering and welting had gone down but I still have red bumps down my arms and stomach. Not as painful as the welting (thank goodness) but still sure itchy. Anyways I saw the dermatologist again on Monday and he said the pathologist said it looks like I have vasculitis which is an inflammation of the blood vessels. It's usually caused by an autoimmune disease. Anyways they have ordered blood tests that I had done yesterday. After seeing me on mon and seeing that the worst of the rash had gone down he is now skeptical that it might be vasculitis but wants to make sure I don't really have anything serious going on. I have no idea what's going on with me but I'm kind of over it! Ain't nobody got time for that!!!