nervous breakdown
noun [ C usually singular ] uk/ˌnɜː.vəs ˈbreɪk.daʊn/ us/ˌnɝː.vəs ˈbreɪk.daʊn/
神经失常;神经衰弱
a period of mental illness, usually without a physical cause, that results in anxiety, difficulty in sleeping and thinking clearly, a loss of confidence and hope, and a feeling of great sadness
He suffered a nervous breakdown in his twenties. 他二十多岁的时候曾患神经衰弱。