Unfortunately, there isn't any clear evidence to say this is exactly what you have - "nerve sensitivity". But with all the problems I had after my 24 BCG, and process of elimination, this is the conclusion of all the doctors. I think I had some problems with the nerve endings after my BCG in Dec 08. That did heal over time (about 4 months). But my Uro just said that was the way my bladder reacted to the BCG. So in May we continued a three maintenance series of BCG. After my last one, I was in so much pain and pressure, I could not leave the house to go any where. My Uro tried an antibiotic, and a 5 day steroid pack too with no relief. Changing doctors, to one who specializes in BCG (@ Moffitt) we decided I can not have anymore BCG and the nerve damage does seem to be healing. I did go to my GYN and Gastroenterologist, because of the location of the pain, and both came to the same conclusion "nerve senitivity in the bladder. In the past months the pressure was all day, and spasms too. I hope this isn't too grafic -
Now I only get pressure at different times. Even when I have to urinate I have a painful pressure in the bottom of my bladder, and after I urinate it goes away.
I know everyone reacts differently to BCG - but so far it has done what it was suppose to do. I wish my first Uro had dropped the high dosage of BCG right after the original 6.
My Uro said he has seen this a couple of times, so I guess that is what I am dealing with.
I hope this helps any questions you might have, but I can only explain what my symtoms are and the conclusion my doctors came to.
Nancy