hysteria
/hɪˈstɪərɪə; hɪs`tɪrɪə/ n[U]
(a) wild uncontrollable emotion or excitement, with eg laughter, crying or screaming 歇斯底里; 精神病
crowds of football supporters gripped by mass hysteria 众多歇斯底里的球迷.
(b) disturbance of the nervous system, esp with emotional outbursts 精神错乱（尤指有情绪发作之表现者）.