I have myotonic muscular dystrophy. I have noted a gradual decrease in penis size now down to 1.5 to 2 inches long. This is not a joke. The problem is that it is difficult to urinate without getting my pants wed. What is causing this and can anything be done to stop the shrinkage. I currently take a number of Rxs. (I also have diabetes type 2 and COPD. (It has been years since I have had an erection.

Summarized question: What can cause penis shrinkage while suffering from myotonic dystrophy?