Watch: Doja Cat Shares "Agonizing" Struggles With Borderline Personality DisorderDoja Cat is getting real about her mental health. The "Paint the Town" rapper shared she's "now struggling with BPD"-also known as borderline personality disorder, a mental health condition characterized by extreme emotions and impulsiveness-in a candid video defending fellow artist Chappell Roan, who often clashes with paparazzi.