It was chilly Saturday night and I put on a big sweatshirt that I had not worn since I was in Alaska in June (that thing saved my life!). After a couple hours, I began to get itchy. I scratched, worried that the hives were coming back. I looked but they didn't seem to be developing. After a couple more hours, big red welts started to develop on my arms. Now, I had washed the sweatshirt when I returned from the Alaska with said new fabric softener. It being summer in New England (and summer in LA and Atlanta), I put it away without a thought. I threw it off and took some Benadryl. Fortunately, they did not go to plague level.
I'm pretty sure that my allergic reaction is the fabric softener. Maybe I can safely eat walnuts again?