What are stretch marks?

So what are stretch marks exactly? I'm a guy and my girlfriend tells me that I have stretch marks around my lower back. I thought only pregnant women got stretch marks but, but according to my girlfriend, that's not true. So if guys can get stretch marks too, what are they and how could I possibly have gotten them?

RiseJimBlue

M, 33, New York

Thank you for your question. Anybody can get stretch marks. Women often get them from pregnancy. Anybody can get them from growing to fast or from significant weight gain. Basically a mark left behind from skin being stretched. Anybody can get them. Best of luck!

Dhaval M. Patel 

Double Board Certified 

Plastic Surgeon 

Hoffman Estates 

Barrington 

Oakbrook 

Chicago