For what it's worth (very little, since it's a medical anecdote shared online), my wife had a nasty case of hives for the first time in her life after trying a sarecycline treatment. Took us quite a while to connect the dots, though, and to this day we don't know if it was really what caused it (or stress, or the fact that she took 3 different vaccines on the same day, or everything combined)
All of that is to suggest that you think about what you have changed about your diet, medication or anything else either in May or shortly before that
All of that is to suggest that you think about what you have changed about your diet, medication or anything else either in May or shortly before that