失眠表现为入睡困难、睡眠不深、容易惊醒和早醒。长期失眠的人深感失眠之苦,精神、体力总得不到恢复,影响大脑正常活动和生理功能。 引起失眠的原因很多,其中以思想紧张和忧虑为最,加之外界因素影响,如声、光、气味不良刺激,不清洁卫生等,而不能入睡。有些疾病如甲状腺功能亢进、高血压、忧郁症等常出现失眠症;不良习惯如喜欢夜生活,看电视和听广播到深夜,造成情绪兴奋 Insomnia manifested as difficulty falling asleep, sleep is not deep, easy to awake and early awake. Long-term insomnia deeply insomnia suffering, mental, physical always get no recovery, affecting the normal brain activity and physiological function. Insomnia caused by many reasons, of which the most thought and anxiety, combined with external factors, such as sound, light, bad smell stimulation, not clean, etc., and can not sleep. Some diseases such as hyperthyroidism, hypertension, depression and other insomnia often appear; bad habits like nightlife, watching TV and listening to the radio late into the night, resulting in emotional excitement