Hi, back when I was in college (30 years ago), I experimented while masturbating by putting a rubber band around my penis. I did this a number of times and most likely did some damage. I know, I know, very dumb but back then I was always trying new things. Here I am, 53 years old, and my penis completely shrinks up when it s cold, to the point that it is truly painful to urinate when I m outside in the elements for an extended period of time in the winter. I have to use a vacuum pump to restore the blood into my penis but obviously, this is not something easy to carry around. I ll use hand warmers inside my underpants too. Is there anything medically that could be done to reverse this damage. I m fearful that this could add to urinary tract infections and bladder problems as I age. I already have a start and stop issue when urinating. I would be grateful for any advice.