I had posted a bit earlier about leaving the zapper on too long. I had the zapper running on 1kHz for about 1 1/2 hrs. Some hours later I noticed that I had burning sensations over my right breast.
Well, I really hadn't noticed a lump on my breast before the zapping and my gynecological exam, several months back, came negative for any breast abnormalities. Your suggestion about adding water is interesting. I hadn't been drinking much liquids lately, perhaps that is part of the problem. So far the burning sensations have been less frequent. I hope that this problem is waning.