Day XX: Copper allergy

I wondered at first if this was some kind of copper allergy, but that seems unlikely…┬áto quote one site,

According to a 1998 report in the British Medical Journal, from 1960 to 1976, St John’s Institute of Dermatology treated only one case of copper contact allergy, which

occurred in a woman whose hobby was copper beating.

And the typical allergy reaction to copper is itching, redness and rash. I don’t have that.