取象比类法在中药治疗失眠中的应用探析

Application of Analogy in Treating Insomnia with Chinese Medicinals

取象比类思维之于失眠,是从失眠的症状类推到失眠阳盛阴虚的病机,而在失眠的治疗上,诸多药物的使用亦可结合阳盛阴虚的病机从取象比类的角度阐释。重镇安神的矿物类药物可使升浮之阳潜藏于重阴,令阴阳相交,是从质地取象比类;昼开夜合的花叶类药物治疗失眠,是从植物的自然习性取象比类,纵横交缠的藤蔓类药物首乌藤亦为如此;怡悦心神的花卉类药物可用于肝气郁结所致失眠,是在取象比类的基础上通过映射扩大了药物的应用范围。

Application of analogy in insomnia is based on the the symptoms and the disease mechanism of yang excess and yin deficiency in insomnia.In the treatment of insomnia,mechanism of various Chinese medicinals also could be explained from the perspective of analogy according to yang excess and yin deficiency.The mineral medicinals for tranquilizing the mind can make the rising and floating yang hide in the extreme yin,and yin and yang communicate,which is the analogy from texture.The circadian medicinals of flower and leaf can treat insomnia,which is the analogy based on the nature of plants,so can the twisted vines like Shouwuteng(Polygoni Multiflori Caulis).The medicinals from ornamental flowers for lightening the heart spirit can also be used for insomnia caused by liver qi stagnation,which is an example of expanding the medicinals’applicable area by mapping on analogy basis.