Alex says he’s had anxiety since he was 7 and has been “self-medicating” with alcohol and drugs for years.

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His mother, Teresa, says she doesn’t believe that Alex drinks every day and his father, Roberto, says his son only smokes marijuana “once or twice a week.”

WATCH: Psychologist To 'Dr. Phil' Guest: ‘I Don’t Believe You’re The Only Person Who Is Self-Sabotaging In This Family’

“My parents are in denial of how bad I am,” says Alex, who, in addition to taking other substances, admits to drinking heavily every day and smoking marijuana up to six times a day, in addition to taking prescription medications for bipolar disorder.

When Roberto says he blames his oldest son, Rob, for Alex’s substance abuse issues, how does Rob respond?

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