Mike says when he was around 13 years old, his dad, Chuck, told him he was adopted. The now 17-year-old was adopted by his grandparents, Chuck and Linda, whom he calls his mom and dad, when he was 4 months old. 

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“Michael’s biological father was abusive to him,” Linda says.
 
“When I found out about the abuse, it did kind of freak me out, and I started having panic attacks and anxiety attacks,” the teen says. “I would drink to ‘numb the pain.’”

WATCH: Watch How 17-Year-Old Rages At His Mother About Going To School
 

Hear more in the video above -- plus, Dr. Phil offers Mike some insight.
 
On Monday’s episode, hear how Mike’s behavior has changed over the last few years and why his parents say they fear he could end up in trouble. And, Mike explains why he rages at his mom and dad. Check here to see where you can watch.