On WTF with Marc Maron, Pete also shared that getting a diagnosis was a very long process for him. He explained, “I’ve been a pothead forever. Around October [or] September [in 2016], I started having these mental breakdowns where I would, like, freak out and then not remember what happened after. Blind rage. I never really did any other drugs, so I was like, ‘I’m gonna try to go to rehab. Maybe that’ll be helpful.’ So I go and I get off weed. They told me there, they’re like, ‘You might be bipolar,’ and I was like, ‘OK.’ So they’re like, ‘We’re gonna try you on these meds.’” 

He explained that when he left rehab, he started smoking weed again, and two months later, he “just snapped” and had a “really bad mental breakdown.” So, he quit smoking again, but after three months, he didn’t feel much different. “One of my psychiatrists [diagnosed me]. He was always saying before this big meltdown, ‘You’re probably bipolar or borderline, we’re just going to have to figure it out.'”

Source: https://www.buzzfeed.com/laurengarafano/famous-men-talk-about-mental-health