autism
noun [ U ] medical uk/ˈɔː.tɪ.zəm/ us/ˈɑː.t̬ɪ.zəm/
孤独症;自闭症
a condition that starts in young children and typically causes behaviour that is unusually centred on the self while limiting the development of social and communication skills
Autism is four times more common in boys than in girls. 男孩子患自闭症的发病率是女孩子的4倍。