When Kathy discovered that her son, Erik, was snorting heroin, she decided to give it a try, too. "I'm kind of embarrassed that I did like it. I started off once in a while," says Kathy, who is a grandma of two. "I snort five or six lines per day now."

WATCH: A Mother And Son Whose Heroin Addiction Bonds Them 

Watch the video above as Kathy offers an intimate look at what she does to get high.

"I don't know how many people this past year have said that I'm kind of different. And I am kind of different," says Kathy through tears. "It's a vicious cycle. There's no one to blame but myself. I'm very uncomfortable in my own skin. I don't like myself. I have a lot of regrets."

WATCH: Addicted Grandma About Grandkids: 'I Don't Do Heroin Around Them'

Both Kathy and Erik turn to Dr. Phil for help on Monday's show -- watch more here.