Help! I have been married for 15 years and have worn my wedding ring every day throughout that time, until now. Suddenly I got an itchy red ring of skin directly under where the ring sits. I removed it for a few weeks and cleaned the ring well in case there was soap residue or something under there and when my finger was totally better I wore it again and within a few hours the same happened again. Surely I cannot suddenly be allergic after all of these years? 
I was wondering if anyone has any ideas, thank you