I have a itchy rash that started about a month ago with bite like marks. Now it is underarms, breast ,chest and upper back but smaller separate marks all grouped together .I have several bruises in these areas, as well. Next I got a huge red blotch of itchy skin under my eye. I then woke up with that side of my face swollen like a black eye, all the way into my cheeks and mouth and I started getting tingling on that side of my body. Now I cannot lay down at night without getting a severe headache, and can only sleep sitting up. Headache is only on right side in temple area and base of skull. ct scan was normal at the er, can you at least lead me in the right direction? docs are baffled