Do you recognize the telltale signs of an addicted teenager?

Experts say more and more students are holed up in their rooms, ignoring friends, family...even food and hygiene so they can spend more time gambling online.

Daniel Gushue knows the scenario. He was a compulsive gambler. "I think if someone had asked me if I had wanted to go out with a beautiful girl or sit at home and play poker, I probably would have said I'd play poker."

Over the course of a two years, Daniel, racked up $18,000 in credit card debt. "So on a typical night, my gambling at it's worst, I deposited $50, I deposited another 50, another 50, a 100, another 100, 50, and then 200. So all-in-all that's 6, $600."

A survey by the University of Buffalo found that over 2% of teens admit to having a gambling problem. That represents 750,000 teens, and some are stealing or selling possessions to keep up their habit. Addiction Psychiatrist Timothy Fong says accessibility is a big part of the problem. "So whereas 15-20 years ago you have to get into a car, drive to a casino, might take you an hour or two hours or three hours to get there, now you can just pick up your cell phone and be gambling while you are waiting in the doctor's office, or while you're waiting at the bus stop."

That's why experts say parents need to be proactive. Dr. Larry Rosen, a professor of psychology says, "Familiarize yourself with what potential problems your kids might come up against, and sit them down and talk to them."

Daniel doesn't play online poker anymore, but he does gamble on sports. That worries his girlfriend, Carlee Schaper. "Sports betting and things like that, I don't like to see him doing that, because I feel like it's a slippery slope, and, um, it's possible for him to go back to his old ways."