Weird Rash

I’ve been doing this WOE for 31 days now and I have developed a rash on both of my armpits. Its a series of small red bumps that have just recently started to become itchy.​All I eat is ground beef 20/80, beef trimmings, and salt. I wonder if this is a histamine reaction, a keto rash? or maybe something just bad leaving my body. Does any one have any understanding of why this happens or has anyone else had this and resolved it?

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