

Another possibility that I had to discover for myself is a sensitivity to nitrites such as you find in bacon and deli meats. Or sulfates in wine. These are not allergies, and benedryl won’t help, although prednisone will make it temporarily go away. I had to just stop eating those foods, although now they’re offering more “uncured” meats, which don’t bother me.
And if all else fails, Bill Burr has a short lotion seminar for white people. https://youtu.be/RiH-_ZUILk0