In particular, the condition known as "borderline personality disorder," once unusual, now often crops up in the children of single-parent families.
特別是過去少見的「邊緣型人格異常」（人際關係、情感不穩定，容易在衝動下做出傷害自己的行為），近年較常出現在單親家庭的孩子身上。