心理因素引起(qi)的(de)失(shi)(shi)(shi)眠(mian)(mian)(mian)(mian)：心理因素是(shi)造(zao)成失(shi)(shi)(shi)眠(mian)(mian)(mian)(mian)的(de)主要(yao)(yao)原(yuan)因。不(bu)僅心理障礙的(de)患(huan)(huan)者(zhe)常常伴有失(shi)(shi)(shi)眠(mian)(mian)(mian)(mian)，即使正(zheng)常人在(zai)情緒困擾、心理有壓力時也會引起(qi)失(shi)(shi)(shi)眠(mian)(mian)(mian)(mian)。患(huan)(huan)者(zhe)抑郁、焦慮對健(jian)康過度的(de)關心是(shi)慢性失(shi)(shi)(shi)眠(mian)(mian)(mian)(mian)者(zhe)的(de)共同心理特點。患(huan)(huan)者(zhe)往(wang)(wang)往(wang)(wang)對入睡時間(jian)估(gu)(gu)計過長，患(huan)(huan)者(zhe)對睡眠(mian)(mian)(mian)(mian)時間(jian)又(you)估(gu)(gu)計太短，這些患(huan)(huan)者(zhe)本(ben)身對失(shi)(shi)(shi)眠(mian)(mian)(mian)(mian)有較大的(de)心理壓力，常常是(shi)“越(yue)怕(pa)失(shi)(shi)(shi)眠(mian)(mian)(mian)(mian)越(yue)失(shi)(shi)(shi)眠(mian)(mian)(mian)(mian)”，不(bu)良暗示往(wang)(wang)往(wang)(wang)是(shi)導致患(huan)(huan)者(zhe)失(shi)(shi)(shi)眠(mian)(mian)(mian)(mian)直(zhi)到失(shi)(shi)(shi)眠(mian)(mian)(mian)(mian)經(jing)久不(bu)愈的(de)重要(yao)(yao)原(yuan)因。

環境因素引起的(de)失(shi)眠：睡(shui)眠環境的(de)突然改變，如有聲(sheng)音嘈雜、燈光(guang)太亮、濕(shi)度太大(da)、床鋪(pu)不(bu)舒服、房間太擁擠等都會影(ying)響(xiang)睡(shui)眠。另外，患者睡(shui)前喝(he)咖啡(fei)也會影(ying)響(xiang)睡(shui)眠。

疾病與藥物因素引起(qi)的(de)失眠(mian)(mian)：患者疼痛、呼吸(xi)困難、哮喘、頻繁咳嗽(sou)、心悸、腓腸肌痙攣等(deng)都能影(ying)響睡眠(mian)(mian)。患者服(fu)用中樞(shu)興奮藥物，或長期(qi)服(fu)用鎮(zhen)靜安(an)眠(mian)(mian)藥后突然停藥也(ye)會出現失眠(mian)(mian)。