Yīshēng huáiyí tā huàn yǒu mǒu zhǒng réngé zhàng'ài.
The doctor suspects he has some kind of personality disorder.
Tips
usage
Umbrella term covering the full DSM cluster: 边缘型 (borderline), 自恋型 (narcissistic), 反社会 (antisocial), 回避型 (avoidant) etc. Add the specific type as a prefix: X型人格障碍.