A state of arrested development in an adult, characterized by retention of infantile mentality, accompanied by stunted growth and sexual immaturity, and often by dwarfism.

• 幼稚病一种出现于成年人当中的发育停滞的状态，其特点是思维幼稚，伴有发育不良和性方面的不成熟，还有侏儒现象发生