Dupuytren's contracture

I developed this strange condition called dupuytren's contracture a few months ago.  It is a knotting of the tendons in the palm of the hand that tends to contract the finger.  The knotting is quite visible, a little bump on the palm about 1 inch below the beginning of the ring finger.  It is in both hands, but worse in my left.  It isn't really painful, and doesn't really affect my climbing.  As far as I can tell, I haven't lost any strength.  In fact, although I am right handed, my left fingers are stronger.  I can hang on edges longer with the left than with the right. I saw a doctor about it and he said that it is not caused by climbing, which I find hard to believe.  He said that there is nothing to really do about it except for surgery to remove the tissue.  He said to keep stretching it and go about normally until it is so bad that the operation has to be done.  Apparently it never goes away without surgery, and will continue to get worse, according to the doctor. I am 36 years old, and have been climbing for 16 years, at the 5.13 level when I am fit (which seems to be less and less often these days...). Any suggestions?