for the last year i have noticed my testicles were shrinking and i have suffered from decreased libido, low testosterone and erection difficulties. I think tonight from surfing the internet I have found what may be causing it! I found somthing called a Varicocele...a sphegetti like mass in the scrotum. I think I have this and I think it may be causing my problems. Does this make sense? I think im going to see if i cant get referred to a urologist. It makes sense my doctor didnt think of this as a problem because he never had me....well drop pants.