Mystery Blisters and Hives

[Leeuhhw]

I am feeling desperate for help and answers after three months of dealing with painful and itchy blisters and hives. At first pus-filled blisters developed on my elbow and forearm, it was treated as staph, came back one month later and treated as staph again. Finally lab results revealed it wasn't a bacteria infection, but by that time it was also popping up sporadically on my shin, toes, back, chest and unfortunately even my face. A dermatologist thought it might be bed bug bites, but my husband hasn't had any issues and I've washed our sheets a bunch of times, etc. Also seems weird that they would keep showing up in the same spot. Blood tests revealed it also wasn't shingles or chicken pox. My dermatologist took a biopsy yesterday so hoping for helpful results. In the meantime it keeps showing up and is very itchy and painful. I've been prescribed topical steroids but they're not making a big difference. Has anyone dealt with something similar? Thank you!