That's actually becoming a rather unpopular term these days, and people feel that, for whatever reason, it's politically better to use the term behavioral disorders and to talk about these as disorders of behavior.
実際にはこの言い方は 最近あまり使われなくなっています 理由は様々ですが 「行動障害」の方が公正な表現であり 行動の障害を 「心の病」を としています