I am writing for my husband. He is 33 years old and has had fairly signifigant stretch marks in his upper thigh/groin area for the last 10 years. He is of a normal weight and has not had any signifigant weight gains or losses .He is dealing with with excruciating pain when he sweats and they rub together or is active(with friction). He has tried switching to briefs and compression shorts for support and to maybe keep things more seperate,but nothing is helping. He has also tried powders to keep things dry. Any ideas would be much appreciated, thanks.