I used to wear an Apple Watch every day for several years without issue. During COVID, I began to develop a rash when I wore the watch. I tried stopping and restarting wearing it and the rash came back a couple times. So I sold my watch more than a year ago.

I may try to wear an Apple watch again. If I do so every day for a month, will I develop a rash?

Of course, if I develop a rash in less than a month, this resolves yes. Resolves no if no rash after a month.