I don't know why, but the fingers on my right hand swelled with the heat, but not the left. My eternity ring was cutting off my circulation and it woke me up. I couldn't get it off so I was hunting in the semi dark for some E45 cream to help get it off. I did get it off but it hurt. Then I took an hour to get back to sleep. I can't get the ring back on yet, it is one of the fingers that has osteoarthritis in the knuckle so said ring is in its box for now. The other hand is not affected, how odd is that?