Cancer patient has scared mentality more , feel azrael will arrive , in a desperate situation of in a state of anxiety , generation psychology is consequently unusual , bring about nightly enter mian hard ; and after entering mian , often also sleep and disloyal 癌症患者多有惧怕心理，感到死神将要降临，惶惶不可终日，因而产生心理异常，导致夜间难以入眠；而入眠后，也往往睡而不实。
