Got an allergic rash all over my body. Went to the doctor… and the result is: I’m suddenly allergic against almost everything. Especially against house dust mite. What the heck! I couldn’t believe it! Did someone of you experience something similar? 
Been there, when I was a kid I had similar allergy tests. No fun!!! Good luck!!!
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When I was young the same, but it was just against dust (voted)
Dude... Welcome in the rabit hole. NO YOUR NOT ALONE. But trying to have any answer from any competent professionnal is impossible.
Your immune system may have been compromised for whatever reason.
My son visited spain and came back with an alergy that took years to go away. Piriton tablets was the onlt thing given to him. Never found out the cause of it
Bro, all of a sudden I've been getting Hives for no reason on my legs and hands. I have also developed this strange itch on my crotch. Though it was jock itch. Never had any of these things in my entire life. I wash my crotch everday so it couldn't be hygienes
The problem is that it is difficult to detect the cause of the allergy even by testing. A few years ago, my mother-in-law struggled for weeks with allegria and a rash on her legs. As she appeared, so she disappeared - suddenly. The cause was never found. I wish you a quick recovery.
Hope you get it sorted out dude. I get reactions on my hands during the summer that bring up blisters. It's never fun.
I was allergic to bee venom. When the poison penetrated into the bloodstream, my body, starting from the face, ending with the legs and arms, was covered with red spots and itched wildly. It was kind of a nightmare until I got the injection. I've never had an allergy like you. I think you need very powerful antibiotics. Get well soon!
I hope you are ok now