infantilism

noun [具体名词]幼稚症；[医] 幼稚型，[医] 婴儿型

I have suggested that it is not just a relapse into infantilism, but a genuine attempt to get at something necessary.
我认为这不仅仅是幼稚病的一种复发，而是真正地在尝试寻找某些很必要的东西。